U D 

r&s 

-life 


No. 1923 


FT MEADE 

GenCoii DESCRIPTION AND RULES FOR THE 

MANAGEMENT OF THE 


UNITED STATES RIFLE 


CALIBER *30, MODEL OF tm 


(3 PLAICES) 


MARCH 3,1904 
REVISED APRIL IS, 5906 
REVISED FEBRUARY 54, 590S 


REVISED APRIL 2* 1909 
REVISED OCTOBER 17 ,1955 
REVISED MARCH 20, 1954 



-* 


WASHINGTON 

GOVERNMENT PRINTING OFFICE 

5954 
















I 























No. 1923 


DESCRIPTION AND RULES FOR THE 
MANAGEMENT OF THE 


UNITED STATES RIFLE 


CALIBER .30, MODEL OF 1903 


(THREE PLATES) 



MARCH 3, 1904 
REVISED APRIL 18, 1906 
REVISED FEBRUARY 14, 1908 
REVISED APRIL 2, 1909 
REVISED OCTOBER 17, 1911 
REVISED MARCH 20, 1914 



WASHINGTON 

GOVERNMENT PRINTING OFFICE 
1914 






I 


A 

, Op 




War Department, 

Office of the Chief of Ordnance, 

Washington, March 20, 1914 . 

This manual is published for the information and government of the Regular Army 
and Organized Militia of the United States. 


By order of the Secretary of War: 


William Crozier, 
Brigadier General, Chief of Ordnance. 


(?) 


D. OF 0, 
MAY 7 (914 



(3) 














































































































UNITED STATES RIFLE, 

CALIBER .30, MODEL OF 1903. 


COMPONENT PARTS OF RIFLE. 

( Ninety-three in number.) 


Barrel: 

Barrel. 

Base Pin. 

Base Spline. 

Fixed Base. 

Fixed Stud. 

Stud Pin. 

Bolt: 

Bolt. 

Extractor Collar. 

Bolt Stop: 

Bolt Stop Pin. 

Bolt Stop Spring. 

Butt Plate: 

Butt Plate. 

Butt Plate Cap. 

Butt Plate Pin. 

Butt Plate Screw, Large. 
Butt Plate Screw, Small. 
Butt Plate Spring. 

Butt Plate Spring Screw. 
Butt Swivel: 

Butt Swivel. 

Butt Swivel Pin. 

Butt Swivel Plate. 

Butt Swivel Screws (2). 
Cut-off: 

Cut-off. 

Cut-off Plunger. 

Cut-off Screw. 

Cut-off Spindle. 

Cut-off Spring. 

Ejector. 

Ejector Pin. 

Extractor. 

Firing Pin: 

Cocking Piece. 

Firing Pin Rod. 


Firing Pin Sleeve. 

Floor Plate. 

Floor Plate Catch. 

Floor Plate Pin. 

Floor Plate Spring. 
Follower. 

Front Sight: 

Front Sight. 

Front Sight Pin. 

Front Sight Screw. 
Movable Stud. 

Guard. 

Guard Screw Bushing. 
Guard Screw, Front. 

Guard Screw, Rear. 

Hand Guard. 

Hand Guard Clips (2). 
Lower Band. 

Lower Band Screw. 

Lower Band Spring. 

Lower Band Swivel. 
Magazine Spring. 
Mainspring. 

Rear Sight: 

Base Spring. 

Drift Slide, .05 Peep. 
Drift Slide Pin. 

Joint Pin. 

Leaf. 

Movable Base. 

Slide. 

Slide Binding Screw. 
Slide Cap. 

Slide Cap Pin. 

Slide Cap Screw. 
Windage Screw. 
Windage Screw Collar. 
Windage Screw Knob. 


( 5 ) 




6 


Hear Sight—Continued. 
Windage Screw Pin. 
Windage Screw Spring. 
Receiver. 

Safety Lock: 

Safety Lock Plunger. 
Safety Lock Spindle. 
Safety Lock Spring. 

Safety Lock Thumb Piece. 
Sear. 

Sear Pin. 

Sear Spring. 

Sleeve: 

Sleeve. 

APP] 

Drift Slide No. 4. 

Drift Slide No. 6. 

Front Sight Cover. ♦ 

Oiler and Thong Case: 

Oil Dropper. 

Oiler Cap Washer. 

Oiler Collar. 

Thong Case Body. 

Thong Case Cap. 


Sleeve—Continued. 

Sleeve Lock. 

Sleeve Lock Pin. 

Sleeve Lock Spring. 
Stacking Swivel. 

Stacking Swivel Screw. 
Stock. 

Stock Screw. 

Stock Screw Nut. 

Striker. 

Trigger. 

Trigger Pin. 

Upper Band. 

Upper Band Screw. 

AGES. 

Oiler and Thong Case—Con. 
Thong Case Pad. 

Thong Case Partition. 
Thong: 

Thong Cord. 

Thong Tip. 

Thong Weight. 

Thong Brush. 

Spare Part Container. 
)RIES. 


Cleaning Bod, Barrack: 

Collar. 

Handle.. 

Rivet. 

Rod. 

Sleeve. 

Cleaning Rod, Model of 1913: 
Brush Section. 

Handle Section. 

Knob. 

Knob Pin. 

Patch Section. 

COMPONENT PARTS OF I 

(Twelve i 

Bayonet Blade. 

Bayonet Catch. 

Bayonet Grip, Left. 

Bayonet Grip, Right. 

Bayonet Guard. 

Bayonet Nut. 


Cleaning Rod, Model of 1913— 
Continued. 

Second Section. 

Swivel. 

Swivel Screw. 

Swivel Section. 

Cleaning Rod Case. 

Screw-Driver: 

Screw-Driver Blade, Large. 
Screw-Driver Blade, Small. 
Screw-Driver Pin. 
Screw-Driver Rivet. 
4.YONET, MODEL OF 1905o 
number.) 

Bayonet Rivets (2). 

Bayonet Scabbard Catch. 
Bayonet Screw. 

Bayonet Spring. 

Bayonet Washer. 






7 


DESCRIPTION AND NOMENCLATURE OF RIFLE. 


The Rifle is shown in Figs. 1 and 2. 

The Barrel, with the Fixed Stud and Fixed Base attached, is 
shown in Fig. 3. It is 24.006 inches in length, and the rifling consists 
of four plain grooves, 0.004 inch deep. The grooves are Fig 3 
three times the width of the lands. The twist is uniform, 
one turn in 10 inches. 

The muzzle is rounded to protect the rifling, and the 
tenon at the rear is threaded for the purpose of securing the 
receiver to the barrel. 

On the top in rear of the fixed stud is stamped the 
Ordnance escutcheon, the initials of the place of man¬ 
ufacture, and the month and year. Those manufac¬ 
tured prior to 1906 are stamped “’05” without the 
month. 

The removal from the barrel of the fixed stud, fixed 
base, or receiver should never be attempted except by 
competent workmen, in armories fully equipped with the 
necessary tools and appliances. 

The Receiver, Fig. 4, top view, Fig. 5, right side view, 
and Fig. 6, front end view, has the hole A, called the well, 
which receives the bolt; the magazine opening B; the chan¬ 
nel C, for the top locking lug; the cut-off seat D; the cut-off 
thumb piece recess E; ejector pin hole F; clip slots G; cock¬ 
ing piece groove H; sear nose slot I; extracting cam J; sear 
pin hole K; gas escape hole L; recoil lug M, in which is the 
hole for the front guard screw; the recesses for the bolt 
locking lugs N N; the locking cams O O; the locking shoul¬ 
ders P P; the safety shoulder Q; and the cartridge 
ramp R. 

On the upper surface of the front end is stamped the 
serial number of the rifle and the place of manufac¬ 
ture. 

The Bolt, Fig. 7, top view, Fig. 8, rear view, and Fig. 9, 
front view, has the handle A; the locking lugs B B, which 
sustain the shock of the discharge, the one on top being 
slotted to allow the passage of the point of the ejector; the 
safety lug C, which comes into play only in the event of 
the locking lugs yielding under powder pressure; the extractor 
collar groove D; extracting cam E; sleeve clearance F; safety 
lock spindle notch G; sleeve lock notch II; firing pin hole I; 
cocking cam J; cock notch K; extractor tongue groove L; gas 51 
escape hole, not shown in cut, between the locking lugs; 


the rim M; and two small circular notches, not shown in cut, 
on the left side of the slotted locking lug; this side of the lug rotates 


























8 


90° when the bolt is drawn back for loading, and one of the 
notches engages with the bolt stop pin A, Fig. 10, in either single 
or magazine loading, retaining the bolt in place in the open 
position. 




The Bolt Stop, Fig. 10, consists of the pin A and the flat spring B, 
riveted together in manufacture. The pin projects through its hole 


V Fig. 7. D 

/ / 



in the receiver just in front of the cut-off opening, and is held in place 
and operated by the spring which fits into a slot in the receiver in the 
rear of the magazine. 






















































































































































































9 


Fig. 11. 



Fig. 12. 


Ihe Sleeve, Fig. 11, top view, and Fig. 12, left side view, has the 
barrel A which is threaded for the purpose of securing the sleeve to 
the bolt; the safety lock seat B; the safety lock plunger groove C; the 
recesses D, for retaining the safet}^ lock when turned to the right or left; 
the recess E, for retaining safety 
lock in dismounting bolt mecha¬ 
nism ; the bevel F, for dismounting 
the safety lock from the sleeve; 
the sleeve lock recess G; and the 
sleeve lock yin hole II. There 
are also the safety lock spindle 
and firing pin holes, the cocking 
piece groove and the undercut for 
the rear end of the bolt. None of 
the last four is shown in the cut. 

The Sleeve Lock, Fig. 13, left 
end view, and Fig. 14, under side 
view, has the spinille A, which is 
bored out to receive the sleeve 
lock spring; the latch B, and the 
sleeve lock pin groove C. It is designed to prevent accidental turning 
of the sleeve when the bolt is drawn back. 

The Sleeve Lock Spring and Pin are shown in Fig. 15. 

The Firing Pin, Fig. 16, consists of ihe firing pin rod A and the 

cocking piece B, which are made 
separately, the former being screwed 
into the latter and riveted in assem¬ 
bling; the length of the rod is so 
adjusted that when the front end of 
the cocking piece bears against the interior shoulder of the sleeve 
the striker point will project the proper distance beyond the face 
of the bolt. Other parts are the knob G, lug D, cocking cam E, 



Fig. 14. 


Fig. 13. 



Fig. 15. 


mum 



nose F, sear notch G, locking shoulder II, locking groove I, neck J, and 
head K. 

The Firing Pin Sleeve, Fig. 17, sectional view, fits over the front 
end of the firing pin and the rear end of the striker, covering the 
joint hole, and preventing accidental separation of the firing pin and 
striker; its rear end forms the front bearing for the mainspring. 











































































































































































10 


The Striker, Fig. 18, has the ; point A, the body B, the shoulder C, 
and the joint hole D, by which it is secured to the firing pin. The 
annular grooves on the striker retain the lubricating oil and prevent 
the accumulation of rust thereon. 



The Mainspring is shown in Fig. 19. 

The Extractor, Fig. 20, inside view, Fig. 21, top view, and 
Fig. 22, front end view, has the hoolc A, by which the cartridge case 


Fig. 19. 



is extracted from the chamber; the tongue B, which rides in its groove 
at the front end of the bolt; the lug C C, which is undercut to receive 


Fig. 20. 



I 


Fig. 24. 


the ears on the lugs of the extractor collar; the gas escape hole D, 
and the back rest E, which is curved to fit the circle of the bolt. 

The Extractor Collar, Fig. 23, end view, and 
Fig. 24, side view, has the ears A A, which fit in 
the undercuts on the inside of the extractor, by 
which means and with the assistance of the ex¬ 
tractor tongue and groove the Fig. 25. 

extractor is held in place. The 
collar is bent into position on 
the bolt in manufacture, and 
should not be removed unless proper tools are at 
hand to replace it. 

The Ejector, Fig. 25, has the point A, the heel B, 
and the ejector pin hole C. It is hinged on the ejector 
pin in its recess in the left side of the receiver, ejection being accom¬ 
plished by the slotted lug on the bolt coming in contact with the 
heel when the bolt is drawn to the rear. 




















































































































































































































11 


The head of the Ejector Pin, Fig. 26, is slotted for the purpose 
of providing sufficient tension to hold the pin in its place during the 
process of assembling. 

The Safety Lock, Fig. 27, rear and side views, consists of thumb 

piece A, the spindle B, spring C, 
and plunger 1), assembled in manu¬ 
facture. It has the cam E, the lock¬ 
ing groove F, the cocking piece groove 
G, the plunger 
hole H, and the 
bolt clearance I. 

The spring and 

plunger are shown in Figs. 28 and 
29, respectively; the latter, projecting into its groove in the sleeve, under 
the action of the spring, prevents any movement of the safety lock to 
the rear, and when in the recesses in the groove retains the safety lock 
turned either to the right or left or in the vertical position for dismount¬ 
ing bolt mechanism. The words “Safe” and “Ready” impressed on 



Fig. 28. 


Fig. 29. 



opposite sides of the thumb piece indicate that the firing mechanism 
is locked or ready for firing. 

The Guard, of which the body of the magazine forms a part, is 
shown in Fig. 30, top viev r , and Fig. 31, right side view. Its parts are: 

Fig. 31. 



guard bow A, front tang B, rear tang C, front 
guard screw stud D, magazine walls E, rear 
end of magazine F, floor plate pin hole G, 
front guard screw hole II, rear guard screw 
hole I, trigger slot J, floor plate lug slot K , floor plate spring hole L, 
floor plate catch slot M, ramp N, and the lightening cut O. 

The Guard Screw Bushing, Fig. 32, fits tightly into the stock 
between the receiver and the rear tang of guard, and serves as a stop 














































































































































































































































































12 


for the screw, preventing its being screwed down tight enough to 
bend the guard. 

The Guard Screws, front and rear, Figs. 33 and 34, secure the 
guard to the receiver. 

The Floor Plate, Fig. 35, inside view, and Fig. 36, sectional view, 
Fig. 32 . has the tenon A,which fits into a groove at the 

front end of the magazine Fig. 33 . Fig. 34 . 
and with the assistance of 
the floor plat ecatch retains 
the floor plate securely in its place at the bottom of 
the magazine; the lug B,which is slotted to receive the 
floor plate catch and has a tenon on its front end which 
fits into a slot in the magazine; the cavity C, through 
which the floor plate catch is released by means of the 
end of a bullet; the magazine spring recess D, and the 
magazine spring seat E. 

The Floor Plate Catch, Fig. 37, hinges on the 
Floor Plate Pin, Fig. 38, and is operated by the Floor Plate 
Spring, Fig. 39. Its function is to retain the floor plate in its seat. 

Fig. 35. 







, C E 

The Magazine Spring is shown in Fig. 40; the 

smaller end slides into the undercuts on the fol¬ 
lower, and the larger end fits in the same way into 

Fig - 37 - the undercuts in the floor 

plate. 

The Follower, Fig. 41, 
Fig. 38. Fig. 39 . to P view, and Fig. 42, right 

WKBS* .... kide view, has the rib A, 

l/ra) which serves to locate the 
cartridges in the magazine 
and guides the last cartridge into the chamber; the 
front stop for the magazine spring B; the rear stop 
for magazine spring C; and the lugs D, in which 
are the undercuts for the magazine spring. 


Fig. 40. 






























































































































































































































































































































































































The Cut-off, Fig. 43, side view, Fig. 44, rear view, and Fig. 45, 
outer edge, has the thumb piece A, body B, magazine fire groove C, 
dismounting groove D, cut-ojf spindle hole E, cut-off plunger hole F, 
cut-off screw hole G, and the serrature H. The words on opposite sides 
of the thumb piece indicate to the firer whether the magazine is “on” 


Fig. 41. 



or “off.” When the cut-off thumb piece is turned down, indicating 
“off,” and the bolt is drawn to the rear, the rear end of the slotted 
locking lug stops against the projecting front end of the cut-off body. 
The piece is then ready for single loading. When the cut-off thumb 
piece is turned up, indicating “on,” and the bolt is drawn to the rear, 

the rear end of the 
slotted locking lug 
stops against the 
shoulder at the rear 
end of the maga¬ 
zine fire groove. 


Fig. 43. 


Fig. 44. 


Fig. 45. 





The piece is then ready for loading 
from the magazine. When the cut¬ 
off thumb piece is in the intermediate 
position, the dismounting groove D 
permits the bolt to be drawn entirely out of the receiver. 

The Cut-off Spindle, Fig. 46, has the cut-off screw groove A and 
the dismounting groove B. 

Fig. 47. Fig. 48. Fig. 49. 


Fig. 46. 



Fig. 48. 

mm 


The Cut-off Screw, fig. 47, goes through the cut-off fiom the 
outer edge of the thumb piece, its end fitting into the groove in the 

cut-off spindle. 

The Cut-off Spring, Fig. 48, and the Plunger, Fig. 49, retain the 
cut-off in its seat in the receiver with the thumb piece turned up for 
loading from the magazine, down for single loading, or in the inter- 
























































































































































Fig. 50. 


Fig.52. 


mediate position for permitting the removal of the bolt. The spindle 
head works in a groove in left side of receiver, having three small 
notches corresponding to the above positions of the cut-off. 

The Sear, Fig. 50, top view, and Fig. 51, right side view, has the 
sear nose A, pin hole B, trigger slot C, trigger pin hole D, and sear 
spring seat E, which is occupied by the Sear Spring, Fig. 52, 

its upper end bearing 
against the receiver. 
The Sear Pin, Fig. 

53, hinges the sear in 
the receiver. 

The Trigger, Fig. 

54, right side view, and 
Fig. 55, front view, is 
hinged in its slot in the 

sear by the Trigger Pin, Fig. 56. It has th o finger piece A, which 
is knurled to prevent slipping of finger; the bearing B; trigger pin 
hole C; heel D; and the stop E. 

The Front Sight, Fig. 57, is secured in its slot in the movable 
stud by the Front Sight Pin, Fig. 58; the pin is tapering, and its 

small end is driven in from 
the right and the ends up¬ 
set to prevent accidental 
removal. 

The Fixed Stud and 
Movable Stud, with r——» 

Front Sight in place, are 
shown assembled, Fig. 59, right side view, 



Fig. 54. 

B 


Fig. 55. 


Fig 57. 



m 



Fig. 58. 


Fig. 59. 


Fig. 60. 




and Fig. 60, front view. The Fixed Stud A has a slot B, which, bear¬ 
ing on a lug on the upper side of the barrel, prevents lateral displace¬ 
ment of the stud; and hole C, for the Stud Pin, which prevents 
longitudinal displacement of the stud. The Movable Stud D has the 
front sight pin hole E. It is held by the undercut slot in the fixed stud 



































































































































































































































































































15 


Fig. 61. 


Fig. 62 . 



and secured from lateral displacement by the Front Sight Screw F. 
The recess for this screw is not drilled in the movable stud until the 
correct position of the movable stud has been determined. The rear 

face G, of both the 
fixed stud and mov¬ 
able stud is serrated 
to prevent any reflec¬ 
tion of light from this 
s u rface interfering 
with the aiming. 

The Fixed Base, 

Fig. 61, rear end 
view, and Fig. 62, 
right side view, has 
the holes A and B, for 
the base pin and base spline, respectively, 
by which it is firmly secured to the barrel 
and lateral and longitudinal movement pre¬ 
vented; the undercut 1), for the tenon of 
the hand guard; the lightening cuts E; the 
barrel hole F; the pivot lug G, for the mova¬ 
ble base; the undercut II, for the lip on the 
rear end of the movable base; the undercut 
I, for the windage screw and the lip on the ° 
front end of the movable base; the lug J, 
on the top of which are two zero marks for 

the wind gauge graduations, and the chamfer K, the seat for the 
windage screw collar. This chamfer is carried to the rear to permit 
of the assembling of 
the fixed base and the 
windage screw. On 
the left side of the 
front lug the chamfer 
corresponding to K is 
merely a conical re¬ 
cess for the head of 
the windage screw. 

The Base Spline 
locates and prevents 
the base from turn¬ 
ing on the barrel. 

The Base Pin, 
similar to the base 

spline, prevents longitudinal movement of the base on the barrel. 

The Movable Base, Fig. 63, top view, and Fig. 64, right side view, 
has the ears A, in which are the holes B, for the joint pin, which serves 



Fig. 63. 


D 


B 




m 



Fig. 64. 


D 


F x ^ 

r x T^-= _BJ 

-as? 



f - - - - ■ ■■ ■ ■—=j^ 

///A 


wm 


G 




















































































































































































































































































16 


as a hinge for the leaf; the wind gauge graduations C, each point of 
which corresponds to a lateral deviation oi 4 inches for each 100 yards; 
the lip D, which fits in the undercut in the rear end of the fixed 
base; the spring opening E; the spring seat F, which is undercut 
to admit the lip on the front end of the base spring; the lip G, in 
which is a worm gear for the engagement of the windage screw; the 
pivot hole H, for the pivot lug on the fixed base, and the shoulders I, 
on which the front end of the leaf rests when down, the hole Iv is 
made for convenience in manufacture. 


Fig. 65. 


Fig. 66. 


Fig. 67. Fig. 68. Fig. 69. 





The Windage Screw consists of the screw, collar, spring, knob, and 
pin, Figs. 65, 66, 67, 68, and 69, respectively. The taper head of 
the screw fits into the conical recess in the left side, and the taper of 
the collar into the chamfer in the right side of the fixed base; the 
thread on the screw engages the worm gear in the lip of the movable 
base. Under the action of the spring, lost motion due to wear is pre¬ 
vented between the windage screw and the movable base and between 
the windage screw and the front lug of the fixed base. 

The Base Spring, Fig. 70, top view, and Fig. 71, side view, has the 
lip A, which fits in the undercut in its seat in the movable base; the 
free end B, and the hole C, by which, with the aid of a drift made for 

Fig . 70 . the purpose, the Fig . 72 . 

spring is assembled 
or dismounted by 
driving it into or out 
of its seat in the movable base. 

The Joint Pin, on which the 
leaf hinges, is shown in Fig. 72. 
It is cylindrical, with rounded 
ends, and fits tightly in the ears of the base. 

The Leaf, Fig. 73, top view (when down), and Fig. 74, right side 
view, has the joint A, in which is the joint pin hole; the rib B; the 
undercut C, for the drift slide, and the sighting notch D. The free 
end of the base spring bears against the lower end of the leaf and main¬ 
tains it in either its lowered or raised position. The leaf is graduated 
from 100 to 2,850 yards. The lines extending across one or both 
branches of the leaf are 100-yard divisions, the longer of the short 
lines are 50-yard and the shorter lines 25-yard divisions. 

The Drift Slide, .05 Peep, Fig. 75, top view (leaf down), has the 
peephole A, 0.05 inch in diameter; the field view B; the drift slide pin C, 



















































17 


Fig. 73. 

D 


26 


22 


24 


20 


18 


16 


14 


TS 


a 


27 




25 


23 


21 



19 


17 


15 


13 


Fig. 74. 


»B 


riveted to the slide in manufacture, and the notches D. The lines on 
either side of the peephole and lower notch enable the drift slide to be 
accurately set at any desired graduation on the leaf. 

As the slide is moved up or down on 
the leaf the drift slide moves with it and 
at the same time has a lateral movement 
in the undercut between the branches of 
the leaf, thus automatically correcting for 
drift. This movement corrects for all 
drift up to 600 yards, but for only part 
of the drift beyond that range. 

With the leaf up, ranges from 100 to 
2,350 yards can be obtained through the 
peephole; from 100 to 2,450 yards through 
the lower notch at the bottom of field 
view; and from 1,400 to 2,750 
yards through the upper notch 
in the upper edge of the drift 
slide. 

The 2,850-yard range is ob¬ 
tained through the sighting 
notch in the upper end of the 
leaf. 

A With the leaf down and using the battle 

sight notch in slide cap the sights are set for 547 yards or battle line 
firing for the down position of the slide. 

The Slide, Fig. 76, top view (leaf down), Fig. 77, front view (leaf 
down), and Fig. 78, right end view, has the leaf slot A; the clearance 



Fig. 76. Fig. 77. Fig. 78. 



B, for the open notch in the drift slide; the slide cap screw hole C; 
slide binding screw hole D; slide cap pin hole E, and the dovetailed 
groove F, for the slide cap. 


Fig. 79. Fig. 80. Fig. 81. Fig. 82. Fig. 83. 



The Slide Cap, Fig. 79, top view (leaf down), and Fig. 80, cross 
section, has the battle sight notch A, slide cap screw hole B, slide cap pin 
hole C, the groove D, for the drift slide pin; and the clearance E, for the 
upper notch in the drift slide. 

35873°—14-2 




























































































































































18 


Fig. 84. Fig 85. The ca p j s attached to the slide 

by entering the dovetailed groove at 
the right and by the slide cap screw 
at the left, thus securing the slide to 
the leaf. 

The Slide Cap Screw is shown in 
Fig. 81. 

The Slide Cap Pin, Fig. 82, is in¬ 
serted in the pin hole E, in the slide, 
Fig. 76, and fitting into a groove in 
the Slide Binding Screw, Fig. 83, 
prevents the accidental removal of 
the latter. 

The Stock is shown in Fig. 84, top 
view, and Fig. 85, right side view. 
The parts are the butt A; small B; 
magazine well C; barrel bed D; air 
chamber E, which reduces the char¬ 
ring effect of a heated barrel on the 
stock; hole for butt plate screw , small, 
and seat for the butt plate tang F; butt 
swivel plate seat G; mortise for re¬ 
ceiver tang lug and hole for rear guard 
screw H; mortise for sear and slot for 
trigger I; cut-off thumb piece recess J; 
mortise for recoil lug on receiver K; 
bed for fixed base L; grasping grooves 
N; shoulder for lower band O; bed for 
lower band spring P; shoulder for up¬ 
per band Q; channels for decreasing 
weight R; upper band screw hole S; 
and the stock screw hole T. The large 
hole in the butt is for decreasing 
weight, and the smaller one is a. 
pocket for the combination oiler and 
thong case or spare part container. 

The initials of the inspector and 
the year of fabrication are stamped 
on the left side in the rear of the cut¬ 
off thumb piece recess. 

The Hand Guard, Fig. 86, right 
side, and Fig. 87, bottom or inner 
surface, has the swell A, for the pro¬ 
tection of the rear sight; the shoulder B, for the lower band; the 
shoulder C, for the upper band; the rear tenon D, which enters the under- 





































































































19 


cut in the fixed base; the front tenon E, which enters the undercut in 
the upper band; the clearance F, for the windage screw lenob; air 
chamber H, and recess I, for the Hand Guard Clips which are shown 

Fig. 86. 



I I 


Fig. 87. Fig. 88. 


in Fig. 88. The hole shown in the cut near the rear end of the inner 
surface is made for convenience in manufacture. At the swell A a 
groove is cut for sight clearance. 

Fig. 89. 





The Butt Plate is represented in Fig. 89 and big. 90. The parts 
are toe A; tang B; cap hole C; cap ears D, through which are the pin 
holes; spring lug E; hole for butt plate screw , large , F; and hole for butt 

Fig. 90. 





plate screw, small, G. A notch is cut into the edge of the cap hole to 
facilitate the opening of the cap. For this purpose the flange o 
the head of a cartridge case can be used. The butt plate is checked 
for the purpose of insuring a firm seat at the shoulder in firing. 























































































































































































































20 


The Butt Plate Cap, Fig. 91, Fig. 92, and Fig. 93, has the pin 
hole A and the thumb notch B. The cap is hinged between the ears of 
the butt plate on the butt plate pin and is retained either closed or 
open by the free end of the Butt Plate Spring, Fig. 96, which bears 


Fig. 92. 


Fig. 91 




C 


■ 


A 


WWI 

WW'l 

IWIW 

ww 

*vw.v 

WK 

►W«»: 


Fig. 93. 


mm u\ is 


Fig. 95. 


Fig. 96. 


Fig. 94. 




on the heel C. The cap 
is checked to match 
with the butt plate. 

The Butt Plate Pin, Fig. 95, after being driven into the holes in 
the ears of the butt plate and cap, has its ends slightly upset. 

The Butt Plate Spring Screw, Fig. 94, secures the spring to 
the lug on the butt plate and is firmly screwed against the spring. 


Fig. 97. 


Fig. 98. 


Fig. 99. 



The Stock Screw and Nut, Fig. 97, are assembled transversely 
through the stock between the magazine well and slot for trigger. 
The thread end of stock screw is upset when in place. 

Fig. 103. 


Fig. 100. Fig. 101. 



The large and small Butt Plate 
Screws, Figs. 98 and 99, secure the 
butt plate to the stock. 

The Butt Swivel includes the 
plate, swivel, and pin assembled. 
The Butt Swivel Plate, Fig. 



100, has the holes A for the swivel 
screws; B for the swivel, and C for the swivel pin. 

The Butt Swivel, Fig. 101, is retained in the plate by the Butt 
Swivel Pin, Fig. 102. 























































































































































































21 


The Butt Swivel Screws are the same as the butt plate screw 
small (see Fig. 98). 

The Upper Band, Fig. 103, has the bayonet lug A; the ears B, in 
which are the holes for the stacking swivel screw; the upper band 
screw hole C, and the undercut D, for the front tenon on the hand guard. 

Pig. 104. Fig. 105. Fig. 10G. Fig. 107. 




The Upper Band 
Screw, Fig. 104, se¬ 
cures the band to the 
stock, the thread un¬ 
der the head engag¬ 
ing the hole in right 
side of the band. 


The Stacking Swivel, Fig. 105, is hinged by the 
lug A between the ears B, of the upper band, on 
the Stacking Swivel Screw, which is like the screw shown in 
Fig. 106, but slightly longer. The threaded end of the screw is upset, 
after assembling, to prevent its being lost. 

The Lower Band Swivel, Fig. 107, is hinged by its lug A, between 
the ears of the lower band, on the Lower Band Screw, Fig. 106. The 



Fig. 108. 


Fig. 109. 



S 




threaded end of the screw is ® 
upset when in place. 

The Lower Band, Fig. 

108, has the ears A and the 
screw holes B; the front or upper end 
is designated by the letter u U. ’ ’ The 
lower band and swivel are split be¬ 
tween the ears in order to give better 
adjustment to the stock and hand 
guard and permit removal of the 
band without marring the stock. 

The Lower Band Spring, Fig. 109, 
has the notch A, which holds the band in place, and the spindle B, 
which retains the spring in the stock. 

THE BAYONET, MODEL OF 1905, AND BAYONET 

SCABBARD. 

The Bayonet, Model of 1905, is shown in Fig. 110, right side view, 
with guard and tang, cross-sectioned, and right grip removed, and in 
Fig. Ill, upper or back view, with blade cut off a short distance from 
the guard. 






























































































22 


Fig. 110. 



The blade A, the tang B, and the pommel C are forged in one piece; 
the front or lower edge is sharp along its entire length and the back 
for a distance of 5 inches from the point. 

The blade is stamped on its left side with the ord¬ 
nance escutcheon and the initials of the place and 
year of manufacture, and on the right side with the 
letters “ U. S.” and the serial number. 

Immediately in the rear of the guard D the tang 
swells and is recessed to receive the scabbard catch E 
and the bayonet spring F. The swell in the tang also 
serves as a seat for the guard, which is riveted to the 
blade in manufacture. 

The opening in the tang and pommel for the bayonet 
catch H connects with the recess in the swell of the 
tang and allows the front end of the bayonet catch 
to enter its seat in the bayonet scabbard catch. The 
undercut groove I receives the stud on the upper band 
when the bayonet is fixed, the bayonet being held in 
place by the bayonet catch projecting through the 
hole K. 

Fig. 112. Fig. 113. Tig. 114. 




The Bayonet Guard, Fig. 112, rear view, has the 
barrel hole A; the mortise B, for the blade; the cut C, for 
the bayonet scabbard catch and scabbard mouthpiece 
hook; and the clearance cut D, for the scabbard mouth¬ 
piece hook. There are also two holes for the bayonet 
rivets not shown in cut, by means of which the bayonet 
guard is riveted to the blade. 


The Bayonet Scabbard Catch, Fig. 113, 
side view, has the thum b piece A; the hook B, 
which retains the bayonet in the scabbard 
by engaging the scabbard mouthpiece hook; 
and the hole C, which receives the point of 
the bayonet catch. 

The Bayonet Spring is shown in Fig. 

114. 

The Bayonet Catch, Fig. 115, side view, 
has the point A; the hole B, which is a clear¬ 
ance for the bayonet screw; and the hook 
C, which, projecting from the hole K, in the 


































































































































23 


pommel, engages the bayonet lug on the upper hand and retains the 
bayonet in its place on the rifle. 

The Bayonet Grip, Right, outside view, is shown in Fig. 118. 
The hole is counterbored to receive the Bayonet Washer, Fig. 119. 
A corresponding hole in the left grip is counterbored to receive the 
Bayonet Nut, Fig. 120. The washer 
in the right grip receives the head, 
and the nut in the left grip receives 
the thread of the Bayonet Screw, 

Fig. 121, by means of which the 
gr >s are attached to the tang of the bayonet. The inner surfaces of 
th Bayonet Grips, Right and Left, are shown in Figs. 117 and 116, 
rei ectively; there are the clearance cuts, A for the bayonet catch , B for 
tlu shoulder on the pommel, C for the swell of the tang, and the hole 
D for the bayonet screw. 

Fig. n6. The Bayonet Scabbard, Model 

of 1905, Fig. 122, side view and 
0 edge view, and Fig. 123, cross sec¬ 
tion of upper end, has the wooden 
body A, made in two pieces and 
glued together; the rawhide cover B, which increases the strength of 
the scabbard; the leather cover C; the mouthpiece bushing P; the 
mouthpiece top D; the mouthpiece body Q, riveted to the wooden 
body by the rivets E E; the mouthpiece hooks F F, either of which 
by its engagement with the hook Fig. m. 

of the bayonet scabbard catch on 
the bayonet retains the bayonet 
in its place in the scabbard; the 
scabbard hook G, attached to the «i 
body by the hook rivet H, which passes through the inside and outside 
washers I and K, and the stop washer L; the fastener M, and the drain 
eyelet N. An offset on the lower end of the hook, traveling in its 

Fig. 121. 






recess in the stop washer, limits the oscillation of the hook to 50 
degrees on each side of the vertical. 

Note. —The cavalry is equipped with the United States rifle, caliber .30, model 
of 1903, but without the bayonet or bayonet scabbard. 

The Bayonet Scabbard, Model of 1910, Fig. 124 and Fig. 125, 
consists of a wooden body covered with rawhide, over which is sewed 























































































































































24 


Fig. 122. 



Model of 1905. 


Model of 1910. 


































































































































































































































25 


a duck cover, or is fitted a woven fabric cover, olive-drab in color. 
The bayonet is held fast in the scabbard by means of two mouthpiece 
hooks on opposite sides of the mouthpiece top. The scabbard is 
fastened to the belt or pack of the soldier by a double-hook which 
is attached to the scabbard by the duck hanger sewed to the cover. 

APPENDAGES. 

The Drift Slide No. 4 and Drift Slide No. 6 are furnished, two 
of each for every ten rifles. The two drift slides have peepholes 
respectively 0.04 inch and 0.06 inch in diameter; and have drift slide 
pins assembled to them. 

Fig. 126. 


? £ 

\ / 



The Oiler and Thong Case, Fig. 126, furnished for ever}" alter¬ 
nate rifle, is carried in the butt of the stock. It consists of a nickel- 
plated brass tube, about 6 inches long and f inch in diameter, divided 
transversely, near the center, by a partition, with both ends fitted 
with screw caps. In one section is carried a small supply of sperm 
oil, and in the other the thong and thong brush used for cleaning the 
bore of the rifle. The cap on the oil section is fitted with a wire, 
flattened at its point, which reaches to the bottom of the section and 
is used for applying oil, a drop or more at a time. The oil is only for 
the lubrication of working parts. The cap is also provided with a 
leather washer to prevent leakage. The cap on the thong section 


Fig. 127. 



has a leather pad on its outer surface, which prevents the noise that 
would result from the oiler striking the butt plate cap. The oiler 
should always be inserted in the stock so that the leather-tipped cap 
will be next to the butt plate cap. The parts as shown in cut are: 
Thong case body A and B; oiler collar D, into which the cap is screwed; 
oiler cap washer E; oil dropper C and F, and thong case cap G. 

The Thong and Thong Brush are shown in Fig. 127. The thong 
tip A, into which the thong brush B is screwed, is provided with a rag 
slot C; the thong cord is knotted in the hole D in the tip, and also in 
the hole E in the weight. In cleaning the bore by means of the thong, 
the brush or rag should always be drawn from the muzzle toward the 
breech. 






















26 


The Spake Part Container, Fig. 128, furnished for every alter¬ 
nate rifle, consists of a cylindrical block of wood (hard maple), 5.8 
inches long and 0.785 inch in diameter. Slots and recesses are cut 

4 

Fig. 128. 



Fig. 129. 


Fig. 130. 


for holding three spare parts—a striker, an extractor, and a firing pin. 
The container is carried in the butt of the stock. 

The Front Sight Cover, Fig. 129, right side view, and Fig. 130, 

front view, is made of sheet 
steel and pressed into 
shape. It is then case- 
hardened, giving it suffi¬ 
cient spring to cause it to 
hug closely the barrel and 
front sight stud, thereby 
retaining its position on 
the barrel. 


ACCESSORIES. 

The Screw-Driver, 
Fig. 131, has the large blade A, the small blade B, the spur C, the pin 
D, and the rivet E. The large blade should be used for the large butt 
plate screw, the butt plate spring screw, and the guard screws; the 
small blade for all other screws, except the cut-off screw, for which 




Fig. 131. 

D 



the spur should be used. The pin serves as a drift in removing the 
butt plate cap, ejector, floor plate catch, sear and trigger pins, and 
the lower band spring. 

The Barrack Cleaning Rod, Fig. 132, is made of brass rod, 
0.25 inch in diameter, and of sufficient length so that the bore can 











































































27 


be cleaned from the breech end. It lias the handle A, the knob B, the 
steel collar C,riveted to the rod, and the brass sleeve D, pinned to the rod. 
The handle swivels on the rod between the collar and the sleeve. 
This rod is intended for use in garrison and camp service. 



The Cleaning Rod, Model of 1913, is a jointed brass rod, 0.25 inch 
in diameter and 35.68 inches long. It is made up of three main 
sections; the handle section, Fig. 133, the second section, Fig. 134, 

Fig. 133. 



and the swivel section, Fig. 135. To the handle section is pinned a 
knob of an aluminum alloy. A brass swivel, Fig. 136, is attached 
to the swivel section by means of the swivel screw, Fig. 137. This 

Fig. 134. 



cleaning rod is provided with a patch section, Fig. 138, and also a 
brush section, Fig. 139, to which can be attached the thong brush 
issued with the rifle. One cleaning rod, model of 1913, with a cleaning 

Fig. 135. 



rod case of olive-drab cotton webbing, is packed with each 10 rifles, 
but issues are based on one cleaning rod case for every eight rifles. 
This rod and case are intended for use in field service only. 

Fig. 136. Fig. 137. Fig. 138. Fig. 139. 




THE ASSEMBLED PARTS AND THEIR OPERATIONS. 

Most of the operating parts may be included under the Bolt 
Mechanism and Magazine Mechanism. 

The Bolt Mechanism consists of the bolt, sleeve, sleeve lock, 
extractor, extractor collar, safety lock, firing pin, firing pin sleeve, 















































Fig. 140. 


striker, and mainspring. It is shown, assembled, in Fig. 140. The 
parts shown in the cut are handle A, sleeve B, safety lock C, cocking 
•piece D, safety lug E, extractor F, extractor collar G, locking lugs II, 
extractor tongue groove I, and gas escape hole J. 

The bolt moves backward and forward and rotates in the well of the 
receiver; it carries a cartridge, either from the magazine, or one placed 

by hand in front of it, into the chamber 
and supports its head when fired. 

The sleeve unites the parts of the bolt 
mechanism, and its rotation with the 
bolt is prevented by the lugs on its sides 
coming in contact with the receiver. 

The hook of the extractor engages in 
the groove of the cartridge case and 
retains the head of the latter in the 
countersink of the bolt until the case is 
ejected. 

The safety lock, when turned to the 
left, is inoperative; when turned to the 
right —which can only be done when the 
piece is cocked —the point of the spindle 
enters its notch in the bolt and locks 
the bolt; at the same time its cam forces 
the cocking piece slightly to the rear, 
out of contact with the sear, and locks 
the firing pin. 

The bolt mechanism operates as fol¬ 
lows: To open the bolt, raise the handle 
until it comes in contact with the left 
side of the receiver and pull directly to 
the rear until the top locking lug strikes 
the cut-off. 

Raising the handle rotates the bolt 
and separates the locking lugs from their 
locking shoulders in the receiver, with 
which they have been brought into close 
contact by the powder pressure. This 
rotation causes the cocking cam of 
the bolt to force the firing pin to the 
rear, drawing the point of the striker 
into the bolt, rotation of the firing pin 
being prevented by the lug on the cocking piece projecting, through 
the slot in the sleeve, into its groove in the receiver. As the sleeve 
remains longitudinally stationary with reference to the bolt, this rear¬ 
ward motion of the firing pin, and consequently of the striker, will 

































































































29 


start the compression of the mainspring, since the rear end of the 
latter hears against the front end of the barrel of the sleeve and its 
front end against the rear end of the firing pin sleeve. 

When the bolt handle strikes the receiver, the locking lugs have 
been disengaged, the firing pin lias been forced to the rear until the 
sear notch of the cocking piece has passed the sear nose, the cocking 
piece nose has entered the cock notch in the rear end of the bolt, the 
sleeve lock has engaged its notch in the bolt, and the mainspring has 
been almost entirely compressed. 

During the rotation of the holt a rear motion has been imparted to 
it by its extracting cam coming in contact with the extracting cam of 
the receiver, so that the cartridge case will be started from the 
chamber. 

The holt is then drawn directly to the rear, the parts being retained 
in position by the cocking piece nose remaining in the cock notch and 
locked by the sleeve lock engaging its notch in the bolt. 

To close the holt, push the handle forward until the extracting cam 
on the bolt bears against the extracting cam on the receiver, thereby 
unlocking the sleeve from the bolt, and turn the handle down. As 
the handle is turned down the cams of the locking lugs bear against 
the locking shoulders in the receiver, and the bolt is forced slightly 
forward into its closed position. As all movement of the firing pin is 
prevented by the sear nose engaging the sear notch of the cocking 
piece, this forward movement of the bolt completes the compression 
of the mainspring, seats the cartridge in the chamber, and, in single 
loading, forces the hook of the extractor into the groove of the 
cartridge case. In loading from the magazine the hook of the ex¬ 
tractor, rounded at its lower edge, engages in the groove of the top 
cartridge as it rises from the magazine under the action of the follower 
and magazine spring. 

The position then occupied by the parts is shown in Fig. 141, and 
the piece is ready to fire. 

To pull the trigger, the finger piece must be drawn to the rear 
until contact with the receiver is transferred from its bearing to 
the heel, which gives a creep to the trigger, and then until the sear 
nose is withdrawn from in front of the cocking piece. 

Just before the bolt is drawn fully to the rear, the top locking lug 
strikes the heel of the ejector, throwing its point suddenly to the 
right in the lug slot. As the bolt moves fully to the rear, the rear 
face of the cartridge case strikes against the ejector point and the case 
is ejected, slightly upward and to the right, from the receiver. 

Double loading from the magazine is prevented by the extractor 
engaging the cartridge case as soon as it rises from the magazine and 
holding its head against the face of the bolt until ejected. 


30 






























































































































































































































































































































































































31 



~-G 


It will be noted that in this system of bolt mechanism the compres¬ 
sion of the mainspring, the seating of the cartridge in and the starting 
of the empty case from the chamber are entirely done by the action 
of cams. 

The piece may be cocked either by raising the bolt handle until it 
strikes the left side of the receiver and then immediately turning it 
down or by pulling the cocking piece directly 
to the rear. 

In firing, unless the bolt handle is turned 
fully down, the cam on the cocking piece will 
strike the cocking cam on the bolt, and the 
energy of the mainspring will be expended in 
closing the bolt, instead of on the primer; this 
prevents the possibility of a cartridge being 
fired until the bolt is fully closed. 

The opening and closing of the bolt should 
each be done by one continuous motion. 

The Magazine Mechanism includes the floor 
plate, follower, magazine spring, and cut-ofT. 

Fig. 142 represents a cross section through the ejector with the 
magazine loaded. The parts shown are receiver A, bolt B , firing pin 
C, ejector D, clip slots E, bolt locking lug channels F, magazine G, 
follower H, magazine spring I, and floor plate J. 

Fig. 143 shows a cross section through the magazine with the 
magazine empty, and with cut-ofT “on,” shown in projection. The 
parts are receiver A, bolt B, firing pin C, cut-off D, rear lug slot E, 

bolt locking lug channels F, magazine G, fol¬ 
lower H, magazine spring I, and floor plate J. 
To charge the magazine, see that the cut-off 
F is turned up showing “on,” draw the bolt 
fully to the rear, insert the cartridges from a 
clip, or from the hand, and close the bolt. 
To charge the magazine from a clip, place 
j/)—G either end of a loaded clip in its seat in the 
receiver and, with the thumb of the right hand, 
press the cartridges down into the magazine 
until the top cartridge is caught by the right 
ed"e of the receiver. The manner in which 

O 

the cartridges arrange themselves in the magazine and the position 
of the follower and compressed magazine spring are shown in Fig. 142. 
The cartridge ramp guides the bullet and cartridge case into the 
chamber. The magazine can be filled, if partly filled, by inserting 
cartridges one by one. 

Pushing the bolt forward, after charging the magazine, ejects the 
clip. 








































32 


When the cut-off is turned down, the magazine is “off.” The 
bolt can not be drawn fully back, and its front end projecting over 
the rear end of the upper cartridge holds it down in the magazine 
below the action of the bolt. The magazine mechanism then remains 
inoperative, and the arm can be used as a single-loader, the cartridges 
in the magazine being held in reserve. The arm can readily be used 
as a single-loader with the magazine empty. 

When the cut-off is turned up, the magazine is “on;” the bolt can 
be drawn fully to the rear, permitting the top cartridge to rise high 
enough to be caught by the bolt in its forward movement. As the 
bolt is closed this cartridge is pushed forward into the chamber, being 
held up during its passage by the pressure of those below. The last 
one in the magazine is held up by the follower, the rib on which 
directs it into the chamber. 

In magazine fire, after the last cartridge has been fired and the bolt 
drawn fully to the rear, the follower rises and holds the bolt open 
to show that the magazine is empty. 

PRECAUTIONS. 

If it is desired to carry the piece cocked, with a cartridge in the 
chamber, the bolt mechanism should be secured by turning the safety 
lock to the right. Under no circumstances should the firing pin be let 
down by hand on a cartridge in the chamber. 

To obtain positive ejection, and to insure the bolt catching the top 
cartridge in magazine, when loading from the magazine, the bolt must 
be drawn fully to the rear in opening it. 

When the bolt is closed, or slightly forward, the cut-off may be 
turned up or down, as desired. When the bolt is in its rearmost 
position, to pass from loading from the magazine to single loading 
it is necessary to force the top cartridge or follower below the reach 
of the bolt, to push the bolt slightly forward and to turn the cut-off 
down, showing “off.” 

In case of a misfire it is unsafe to draw back the bolt immediately, 
as it may be a case of hang-fire. In such cases the piece should be 
cocked by drawing back the cocking piece. 

It is essential for the proper working and preservation of all cams 
that they he kept lubricated. 

DISMOUNTING AND ASSEMBLING BY SOLDIER. 

The bolt and magazine mechanism can be dismounted without 
removing the stock. The latter should never be done, except for 
making repairs, and then only by some selected and instructed man, 


33 


TO DISMOUNT BOLT MECHANISM. 

Place the cut-off at the center notch; cock the arm and turn the 
safety lock to a vertical position, raise the bolt handle and draw out 
the bolt. (Fig. 144.) 


Fig. 144. 



Hold bolt in left hand, press sleeve lock in with thumb of right 
hand to unlock sleeve from bolt, and unscrew sleeve by turning to the 
left. (Fig. 145.) 

Hold sleeve between forefinger and thumb of the left hand, draw 
cocking piece back with middle finger and thumb of right hand, turn 

Fig.145. 



safety lock down to the left with the forefinger of the right hand, in 
order to allow the cocking piece to move forward in sleeve, thus par¬ 
tially relieving the tension of mainspring; with the cocking piece 
against the breast, draw back the firing pin sleeve with the forefinger 


35873°—14-3 














































































34 


and thumb of right hand and hold it in this position (Fig. 146) while 
removing the striker with the left hand; remove firing pin sleeve and 
mainspring; pull firing pin out of sleeve; turn the extractor to the 

Fig. 146. 



right, forcing its tongue out of its groove in the front of the bolt, and 
force the extractor forward (Fig. 147) and off the bolt. 

TO ASSEMBLE BOLT MECHANISM. 

Grasp with the left hand the rear of the bolt, handle up, and turn 
the extractor collar with the thumb and forefinger of the right hand 
until its lug is on a line with the safety lug on the bolt; take the 
extractor in the right hand and insert the lug on the collar in the 

Fig. 147. 



undercuts in the extractor by pushing the extractor to the rear until 
its tongue comes in contact with the rim on the face of the bolt (a 
slight pressure with the left thumb on the top of the rear part of the 
extractor assists in this operation); turn the extractor to the right 
until it is over the right lug; take the bolt in the right hand and press 







































35 


the hook of the extractor against the butt plate (Fig. 148) or some 
rigid object, until the tongue on the extractor enters its groove in 
the bolt. 

With the safety lock turned down to the left to permit the firing 
pin to enter the sleeve as far as possible, assemble the sleeve and firing 
pin; place the cocking piece against the breast and put on mainspring, 
firing pin sleeve, and striker (see Fig. 14G). Hold the cocking piece 
between the thumb and forefinger of the left hand, and by pressing 
the striker point against some substance, not hard enough to injure it, 
force the cocking piece back until the safety lock can be turned to the 
vertical position with the right hand; insert the firing pin in the bolt 
and screw up the sleeve (by turning it to the right) until the sleeve 
lock enters its notch on the bolt. 

See that the cut-off is at the center notch; hold the piece under floor 
plate in the fingers of the left hand, the thumb extending over the left 
side of the receiver; take bolt in right hand with safety lock in a ver- 


Fig. 148. 



tical position and safety lug up; press rear end of follower down with 
left thumb and push bolt into the receiver; lower bolt handle; turn 
safety lock and cut-off down to the left with right hand. 

TO DISMOUNT MAGAZINE MECHANISM. 

\ 

With the bullet end of a cartridge press on the floor plate catch 
(through the hole in the floor plate), at the same time drawing the 
bullet to the rear; this releases the floor plate. 

Raise the rear end of the first limb of the magazine spring high 
enough to clear the lug on the floor plate and draw it out of its 
mortise; proceed in the same manner to remove the follower. 

To assemble magazine spring and follower to floor plate, reverse 
operation of dismounting. 

Insert the follower and magazine spring in the magazine, place the 
tenon on the front end of the floor plate in its recess in the magazine, 
then place the lug on the rear end of the floor plate in its slot in the 
guard, and press the rear end of the floor plate forward and inward 
at the same time, forcing the floor plate into its seat in the guard. 












36 


TO COMPLETE DISMOUNTING. 

(Not to be done by soldier.) 

The bolt and magazine mechanism having been dismounted, pro¬ 
ceed as follows: 

1. Turn safety lock to dismounting bevel on sleeve and remove it 
by striking the thumb piece a light blow. 

2. To dismount the sleeve lock, drive out sleeve lock pin from the 
top and remove lock and spring, being careful not to lose the spring. 

3. Remove front sight pin (see directions for replacing broken 
parts, p. 44) and remove front sight. 

4. Press in rear end of lower band spring and drive forward the 
lower band by a few sharp blows on the lug and then on top with a 
hardwood block. 

5. Remove upper band screw and drive upper band forward, in the 
same manner prescribed for the lower band. 

6. Move upper band forward on barrel until stopped by movable 
stud, and then remove lower band by slipping it over upper band and 
movable stud. To remove upper band entirely from barrel requires 
the removal of the front sight screw and the movable stud. 

7. Draw hand guard forward until free from the fixed base and 
remove. 

8. Remove guard screws and guard. It may be necessary to tap 
gently on the front and rear of the guard bow to loosen. 

9. Remove barrel and receiver from stock. 

10. To remove the lower band spring, drive its spindle out of its 
hole in the stock from the left. 

11. Unscrew the butt swivel screws and remove the butt swivel 
plate from stock. The butt swivel, consisting of the plate, swivel, and 
pin, permanently assembled, is issued complete. 

12. Unscrew butt plate screws and remove butt plate from stock. 

13. Unscrew butt plate spring screw and remove the butt plate 
spring; drive out butt plate pin (see direction on p. 44) and remove 
butt plate cap. 

14. Remove cut-off by loosening the screw in the end of the thumb 
piece until it disengages the groove in the cut-off spindle; insert the 
blade of a screw-driver in the notch in the rear end of the spindle and 
force it out. Remove the spring and the plunger, being careful not 
to lose them. 

15. Remove the ejector by driving out the ejector pin from the 
upper side. 

16. Remove sear and trigger by driving out the sear pin from the 
right, being careful not to lose the sear spring. 


37 


17. Remove trigger from sear by driving out the trigger pin from 
either side. 

18. Remove door plate catch and spring by driving out the pin 
from either side. 

19. Remove bolt stop by inserting a small punch or end of striker 
in the hole in the left end and forcing it from its pocket. 

The leaf should never be removed from the movable base except 
for the purpose of making repairs. 

The fixed base and the fixed stud should never be removed from the 
barrel. 

The barrel should never be unscrewed from the receiver. 

TO ASSEMBLE AFTER DISMOUNTING. 

Reverse and follow in inverse order the operations of dismounting. 

In assembling the sleeve lock to the sleeve, be careful to compress 
the lock and spring while driving in the pin from the bottom of the 
sleeve. 

To assemble the safety lock and sleeve, insert the safety lock spindle 
in its hole in the sleeve as far as it will go; then, with the thumb piece 
vertical and pressed against some rigid object, introduce the point of 
the tool provided for this purpose between the safety lock spindle and 
the safety lock plunger, forcing the latter into the thumb piece 
until it slips over the edge of the sleeve. Further pressure on the 
safety lock thumb piece, together with the gradual withdrawal of the 
tool, will complete the assembling. 

In assembling pins and screws, note directions for replacing broken 
parts on page 44. 

The floor plate spring and the cut-off spring are alike, except in 
length. The latter being the longer, care should be taken not to 
substitute one for the other. 

CARE OF THE RIFLE. 

As the bore of the rifle is manufactured with great care in order 
that a high degree of accuracy may be obtained, it should be well 
cared for. The residuum from smokeless powder tends to corrode 
the bore and should therefore be removed as soon after firing as 
practicable. The following method has been practiced at the Spring- 
field Armory for a number of years with good results: Using the 
cleaning rod and small patches of cloth (preferably canton flannel), 
clean the bore thoroughly with patches soaked in a saturated 
solution of soda and water. (A strength of at least 20 per cent, 
consisting of at least \ pound of sal soda per pint of water 
should be used. The sal soda will dissolve more readily in hot 
water.) Then thoroughly dry the bore and remove the soda 
solution by the use of dry patches, and finally oil the bore with 
patches soaked in cosmic oil. Twenty-four hours after this first 


/ 


38 

cleaning the bore should be again cleaned as described above, as it 
has been found that the powder gases are probably forced into the 
texture of the steel and will, if the second cleaning is not resorted to, 
cause rusting, no matter how thoroughly the bore may have been 
cleaned at first. 

If, however, a cleaning rod is not at hand, the barrel should be 
cleaned as thoroughly as possible by means of the thong brush and 
rags, and oiled as above. To clean or oil the bore with rags, the 
thong brush is unscrewed, the rag placed in the rag slot of the thong 
tip and drawn from the muzzle toward the breech. 

If gas escapes at the base of the cartridge, it will probably enter the 
well of the bolt through the striker hole. In this case the bolt 
mechanism must be dismounted and the parts and well of the bolt 
thoroughly cleaned. 

Before assembling the bolt mechanism, the firing pin, the barrel 
of the sleeve, the body of striker, the well of bolt, and all cams should 
be lightly oiled. . 

Many of the parts can generally be cleaned with diy rags. All 
parts after cleaning should be wiped with an oiled rag. 

The best method of applying oil is to rub with a piece of cotton 
cloth upon which a few drops of oil have been placed, thereby avoid¬ 
ing the use of an unnecessary amount of oil; this method will, even 
in the absence of the oiler, serve for the cams and bearings, which 
should be kept continually oiled. 

Any part that may appear to move hard can generally be freed by 
the use of a little oil. 

The stock and hand guard may be coated with raw linseed oil and 
polished by rubbing with the hand. 

Sperm oil should only be used for lubricating metallic bearing and 
contact surfaces. 

For the chamber and bore, only cosmoline or cosmic should be 
used. This should also be applied to all metallic surfaces, to prevent 
rusting when arms are stored or when not used for an appreciable 
length of time. 

METALLIC FOULING. 

It lias been found that a deposit of metallic fouling is left in the 
bore of the rifle when ball cartridges, caliber .30, model of 1906, of 
earlier manufacture, are used, and a solution for the removal of 
metallic fouling from the bores of small arms has, therefore, been 
issued by the Ordnance Department to all post ordnance officers for 
reissue to organizations. 

It consists of 1 ounce of ammonium per-sulphate, 200 grains 
ammonium carbonate, 6 ounces ammonia (28 per centum), and 4 
ounces water, making a sufficient quantity to clean 20 rifles. If no 


39 


scales are available for weighing the ingredients, they may be 
measured, and the equivalents are as follows: 

1 ounce of ammonium per-sulphate equals two medium heaping 
spoonfuls. 

200 grains ammonium carbonate equals one medium heaping 
spoonful. 

6 ounces ammonia, 28 per centum pure, equals three-eigliths of 
a pint. 

4 ounces water equals one-fourth of a pint. 

The spoon referred to above is the spoon issued by the Ordnance 
Department for the mess outfit. 

The solution is made as follows: 

The carbonate and per-sulphate should first be pulverized and 
mixed together and the ammonia and water added, after which the 
mixture should be thoroughly stirred. The solution should stand for 
half an hour before using. The bore of the rifle should be plugged 
with a cork or wooden plug at the breech end and just below the 
metallic fouling. The bore should then be filled with the solution 
and the muzzle corked or plugged. The solution should remain in 
the bore for about two hours or long enough to cut the metallic foul¬ 
ing, after which it should be removed and canton flannel or other soft 
material run back and forth through the bore to remove the residue. 
Great care must be taken to remove the solution from all metallic 
parts, as it may start rusting in a very short time. Special care 
should be used in removing it from the breech mechanism. The solu¬ 
tion may be used several times, but after it has been once used it 
should be placed in a bottle and not mixed with any unused solution. 
This solvent is expensive and should be used economically. 

PACKING OF RIFLE. 

The rifles are issued in arm chests containing: 

10 United States rifles, caliber .30, model of 1903. 

2 drift slides, No. 4. 

2 drift slides, No. 6. 

10 front sight covers. 

5 oiler and thong cases. 

5 thongs and thong brushes. 

5 spare part containers with contents. 

1 cleaning rod, model of 1913, and cleaning-rod case. 

2 screw-drivers. 

1 book, Description and Rules for the Managenent of the United 
States Rifle, Caliber .30, Model of 1903, Form 1923. 

The interior of the arm chest is provided with wooden packing 
strips for the purpose of securely holding the rifles in place in trans¬ 
portation. The arrangement of this packing and of the rifles should 


40 


be carefully observed when arms are received from an arsenal, in 
order that the same method may be used if for any reason the rifles 
should be shipped away from the post. Rifles should never be 
shipped in these chests unless all of the packing strips have been 
properly assembled with the rifles in the chests. 

The ends of these chests are provided with narrow pockets for the 
reception of the front sight covers, screw-drivers, extra drift slides, 
and descriptive pamphlet which are shipped with the rifles. 

Plate II, at the back of this pamphlet, shows the arm chest in detail. 


ARM LOCKER FOR UNITED STATES RIFLE, CALIBER .30, MODEL OF 1903. 

This chest is issued at the rate of one per company or troop for use 
in the safe-keeping of the surplus rifles of a company or troop. It is 
provided with reenforcing angle irons which secure the bottom of the 
chest to the sides; and with blind strap hinges, hasps, and staples for 
securing the cover to the body of the chest. Two padlocks with 
chains and keys are also issued with each arm locker. 

Plate III, at the back of this pamphlet, shows the arm locker in 
detail. 

REPAIR OF RIFLE. 

The following spare parts will be issued for repairs of arms in the 
hands of troops: 

RIFLE. 


Assembled. 


Bolt: 

Bolt. 

Extractor collar 
Bolt Stop: 

Bolt Stop Pin. 1 A , i 
Bolt Stop Spring. J 
Butt Plate. 

Butt Plate Cap. 

Butt Plate Pin. 

Butt Plate Screw, Large. 

Butt Plate Screw, Small. 

Butt Plate Spring. 

Butt Plate Spring Screw. 

Butt Swivel: 

Butt Swivel. 

Butt Swivel Pin. 

Butt Swivel Plate. 

Butt Swivel Screw. 

Cut-off. 

Cut-off Plunger. 

Cut-off Screw. 

Cut-off Spindle. 

Cut-off Spring. 


Assem¬ 

bled. 


Ejector. 

Ejector Pin. 
Extractor. 

Firing Pin: 

Cocking Piece. 
Firing Pin Rod. 
Firing Pin Sleeve. 


Assembled. 


Floor Plate. 

Floor Plate Catch. 
Floor Plate Pin. 

Floor Plate Spring. 

F ollower. 

Front Sight. 

Front Sight Pin. 
Guard. 

Guard Screw Bushing. 
Guard Screw, Front. 
Guard Screw, Rear. 
Hand Guard. 

Hand Guard Clip. 
Lower Band. 

Lower Band Screw. 
Lower Band Spring. 




41 


Lower Band Swivel. 
Magazine Spring. 
Mainspring. 

Hear Sight: 

Base Spring. 

Drift Slide No. 5— 
Drift Slide, .05 
Peep. 

Drift Slide Pin. 
Joint Pin. 

Leaf. 

Movable base. 

Slide: 

Slide. 

Slide Cap.] 

Slide Binding Screw. 


Assem¬ 

bled. 


'/Assembled. 


Slide Cap Pin. 

Slide Cap Screw. 
Windage Screw— 
Windage Screw 
Windage Screw 
Collar. 

Windage Screw 
Knob. 

Windage Screw 
Pin. 

Windage Screw 
Spring. 


Assem¬ 

bled. 


Safety Lock: 

Safety Lock Plunger 
Safety Lock Spindle. 
Safety Lock Spring. ■ 
Safety Lock Thumb 
Piece. 


Assem¬ 

bled. 


Sear. 


Sear Pin. 

Sear Spring. 

Sleeve: 

Sleeve. 

Sleeve Lock. 

Sleeve Lock Pin 
Sleeve Lock Spring. 
Stacking Swivel. 
Stacking Swivel Screw. 
Stock: 

Guard Screw Bush¬ 
ing. 

Stock. 

Stock Screw. 

Stock Screw Nut. 
Striker. 

Trigger. 

Trigger Pin. 

L T pper Band. 

Tapper Band Screw. 


Assem¬ 
bled or 
sepa¬ 
rately. 


Assem¬ 

bled. 


APPENDAGES. 


Drift Slide No. 4: 

Drift Slide, .04 
Peep. 

Drift Slide Pin. 
Drift Slide No. 6: 

Drift Slide, .06 
Peep. 

Drift Slide Pin. 
Front Sight Cover. 

Oiler and Thong Case: 
Oil Dropper. 

Oiler Cap Washer. 
Thong Case Body— 
Oiler Collar. 
Thong Case 
Body. 

Thong Case 
Partition. 


Assem¬ 

bled. 


Assem¬ 

bled. 


Assem¬ 

bled. 


Oiler and Thong Case—Contd. 
Thong Case Cap- 
Thong Case 

Cap. Assem- 

Thong Case bled. 
Pad. 

Thong: 

Thong Cord. 

Thong Tip. 

Thong Weight. 

Thong Brush. 

Spare Part Container (wood 
part). 















42 



ACCESSORIES. 


Cleaning Rod, Model of 1913: 
Brush Section. 

Handle Section— 

Handle Sec¬ 
tion. Assem- 

Knob. bled. 

Knob Pin. 

Patch Section. 

Second Section. 


Cleaning Rod Model 
Continued. 

Swivel. 

Swivel Screw. 
Swivel Section. 
Cleaning Rod Case. 
Screw-Driver. 


of 1913- 


bayonet, MODEL OF 1905. 


Bayonet, complete. 
Bayonet Catch. 
Bayonet Grip, Left. 
Bayonet Grip, Right. 
Bayonet Nut. 


Bayonet Scabbard Catch. 
Bayonet Screw. 

Bayonet Spring. 

Bayonet Washer. 


ARM REPAIR CHEST, MODEE OF 1910. 

In place of the company repair kit formerly issued, the arm repair 
chest has been adopted for future issue. This chest will be issued to 
each organization armed with the rifle, and to each regimental or 
post ordnance officer for cleaning, repairing, and preserving arms 
and equipments. The chest contains the following tools, cleaning 
material, and spare parts: 

TOOLS. 

1 Anvil. 

1 Bullet jacket extractor. 

10 Drifts for the following pins and springs— 

No. 1. Assembling and dismounting base spring. 

No. 2. Removing trigger and butt plate pins. 

No. 3. Starting front sight and sleeve lock pins. 

No. 4. Drawing out pins started with No. 3. 

No. 5. Removing joint, sear, and ejector pins. 

No. 6. Starting floor plate pin and removing bolt stop. 

No. 7. Driving out floor plate pin and lower band spring. 
No. 8. Starting windage screw pin and slide cap pin (2). 
No. 9. Removing pins started with No. 8. 

1 Eyelet awl, for putting eyelets in belt. 

1 Eyelet set. 

3 Files, 6 inch; flat, round, and three-square, with handles. 

1 Hammer, steel. 

1 Hammer, brass. 

1 Handle, tool, containing 10 tools. 





43 


1 Oiler, with cap. 

2 Pliers, flat and round nose. 

1 Saw, crosscut, detachable handle. 

2 Screw drivers, fitting the following screws— 

No. 1. Guard, large butt plate and butt plate spring screws. 
No. 2. Stacking swivel, lower band, butt swivel, small butt 
plate, upper band, and bayonet screws. 

1 Set No. 1, for upsetting ends of the lower band and stacking 
swivel screws. 

1 Tool for assembling safety lock on sleeve. 

1 Vise, 1.25 pound. 


SPARE PARTS (PISTOL). 


2 Extractors. 

2 Firing pin springs. 

1 Main spring. 

TOOLS 

10 Cleaning rods. 

10 Screw drivers. 


2 Recoil springs. 

2 Sear springs. 

2 Stock screws. 

FOR CLEANING PISTOL. 

10 Thong brushes. 


CLEANING MATERIAL. 


2 Pints cosmic. 

3 Pints sperm oil. 


250 Cut patches (cotton flannel). 
250 Cut patches (Tampa flannel). 

SPARE PARTS (RIFLE). 


2 Bolts. 

7 Firing pins. 

2 Cut-off plungers. 

2 Cut-off springs. 

2 Ejector pins. 

4 Extractors. 

5 Front sight covers (appendages 

to rifle). 

2 Lower band screws. 


2 Mainsprings. 

1 Safety lock, complete. 

2 Slide binding screws. 

4 Slide cap pins. 

3 Slides and slide caps, assem¬ 

bled. 

1 Stacking swivel. 

2 Stacking swivel screws. 

15 Strikers. 


FOR SHOES. 

2 Quarts neat’s-foot oil. 

FOR BELTS. 

50 Eyelets. 

50 Washers for eyelets. 

The tools named above must be handled carefully and with skill 
to avoid injuring the heads and threads of screws and defacing other 
metallic parts. 






44 


PARTS WHICH ARE MOST LIABLE TO REQUIRE REPAIR. 

Bolt Stop. —Worn by continual contact with bolt. 

Cocking Piece. —Nose worn from neglect to keep it lubricated. 

Lower Band Swivel and Screw. —Screw, if not riveted in place, 
works loose and, with swivel, is lost. 

Safety Lock. —Thumb piece knocked off by blow. 

Stacking Swivel and Screw. —Screw, if not riveted, works loose 
and, with swivel, is lost. 

Stock. —Bruises, cuts, pieces chipped from different points, broken 
at small. 

Striker. —Point burned by defective cartridge, or broken by snap¬ 
ping on empty chamber. 

REPLACING BROKEN PARTS. 

Butt Plate Pin. —This pin has both ends upset; the burr on one 
end must be filed off and the pin driven out with a drift; when a new 
pin is put in its ends must be upset with light blows of a hammer. 

Front Sight. —The burr on the left side must be filed off and the 
pin driven out from the left with a drift; when the new front sight is 
in place, a new pin is driven in from the right and its left end upset 
with light blows of a hammer. 

Lower Band Screw. —This screw, when in place, has its end upset 
and riveted over the band ear. It should never work loose, if properly 
assembled, and when it has to be removed to replace an injured swivel, 
the burr on the end should be filed off and the screw taken out, the 
end being again upset when the screw has been returned to its place. 

Stacking Swivel Screw. —As the screw is made long and its end 
upset, it should be kept well screwed up at all times. It is removed 
to replace a broken swivel and replaced as explained in preceding para¬ 
graph, care being taken to upset the end only. 

Trigger Pin. —This is a straight pin and can oe driven in or out 
from either side. 

\ INJURIES WHICH DO NOT RENDER PARTS UNSERVICEABLE. 

Bolt. —The entire flange at front end may be broken off, except a 
small portion on the opposite side from the extractor hook, which is 
required to hold, in connection with the extractor hook, the empty 
case while it is being drawn to the rear for ejection. 

If automatic ejection be not considered, the entire flange may be 
dispensed with. 

Butt Plate.—B ruises, cuts, or wearing. 

Butt Swivel. —Bent. 

Cocking Piece. —Moderate wearing of nose. The nose can wear 
until raising and lowering the bolt handle fails to cock the piece. 

Extractor. —Moderate wear or break of edge of hook. 

Floor Plate. —Bent or bruised. 

Guard. —Bent, bruised, or cut. 


45 ’ 


USING THE RIFLE WHEN CERTAIN PARTS OF THE BOLT AND MAGAZINE 

MECHANISM ARE WANTING. 

The parts not essential, or only so to a degree, are the ejector, safety 
lock, cut-off, bolt stop, sleeve lock, floor plate, magazine spring and 
follower. 

In the absence of the ejector, the empty cases drawn to the rear by 
the extractor can be removed from the receiver by the finger. 

The safety lock being merely a precautionary device, its absence 
does not affect the usefulness of the arm. 

In the absence of the cut-off, the arm can be loaded from the maga¬ 
zine, but the magazine can not be held full in reserve; in single load¬ 
ing with the cut-off wanting and magazine empty, the soldier should 
be instructed to load directly into the magazine, as otherwise the for¬ 
ward motion of the bolt will be stopped by coming in contact with the 
follower. In this case, care should be taken in drawing the bolt back 
not to draw it from the receiver. 

The absence of the bolt stop and sleeve lock does not affect the use¬ 
fulness of the arm. 

The absence of the floor plate, follower, and magazine spring only 
prevents the use of the magazine, but does not prohibit the use of the 
arm as a single-loader. The soldier should be taught to appreciate 
these facts. 

REMARKS. 

Complaints have not infrequently been received that a mainspring 
was too weak to perform its office, when the fault rested with the 
soldier, who in sighting inadvertently raised the bolt handle with his 
hand before pulling the trigger, and thus caused the force of the 
spring to be expended in closing the bolt, instead of in exploding the 
cartridge. 

All cams and bearings should be kept slightly oiled to prevent wear. 

When firing many successive rounds care must be taken that un¬ 
burned grains of powder do not collect and pack in the locking lug 
recesses of the receiver, as this will interfere with the perfect closing 
of the bolt. Such accumulations can be blown out from time to time, 
or, when packed, removed by a knife or the screw-driver. 

Except when repairs are needed, the following parts will constantly 
be injured if allowed to be dismounted by the soldier for cleaning; and 
when repairs are necessary, they should be removed only by a com¬ 
pany artificer, or some one familiar with the handling of tools and 
delicate mechanisms, viz: Bolt stop, cut-off, safety lock, sleeve lock, 
front sight, movable stud, lower band, upper band, and stacking 
swivel screws. 

Unless the screw-driver is handled carefully, and with some skill, 
the screws are sure to be injured either at the head or thread. 


46 


Fig. 149. 


Fig. 150. 


Fig. 151. 


The Bullet Jacket Extractor is shown in Figs. 149, 150, and 
151. This extractor consists of a steel cylindrical plug provided with 

lands and grooves on the sides. To 
use the extractor, it is inserted in the 
muzzle of the barrel hollow end (see 
Fig. 149) first. The extractor is then 
urged down the barrel by pressure 
applied with the cleaning rod until the jacket and extractor fall out 
into the chamber. (See arm repair chest, model of 1910, page 42.) 

The Aiming Device, Fig. 152, in place on the arm, and Fig. 153, 
in detail, is intended for use in aiming drill, and is issued to infantry, 





Fig. 152. 



cavalry, and engineers at the rate of four per company. By it the 
instructor, while standing on one side and facing the rear sight on the 
rifle when the soldier is in the act of aiming, can see the reflection of 
both sights and the object aimed at and can therefore judge of the 
accuracy and steadiness of the soldier’s aim. 

The device consists of a circular spring steel 
clip A, which embraces the barrel and a portion 
of the stock immediately in rear of the rear 
sight, a standard B, riveted to the clip, and a 
sheet-steel cage C, mounted on the standard, 
which carries a glass reflector D. 

The ends of the spring clip are covered with 
leather to prevent marring of the barrel and 
stock. This leather cover terminates in two 
loose flaps, by which the clip can be spread in 
seating and removing the device. 

The upper end of the standard is drilled and 
tapped for a screw eye E, winch prevents acci¬ 
dental removal of the reflector cage. 

The reflector cage consists of a back and a 
top and bottom. To the back is riveted a piece of 
sheet steel, shaped to engage the standard forming a sliding bearing 
for the cage on the standard. A flat leaf spring F, secured in this 















47 


bearing, gices sufficient friction on the standard to hold the cage at the 
desired height. The top and bottom of the cage contain grooves, set 
at an angle of 45° with the barrel, in which is seated the reflector glass. 
The glass itself is plain sheet glass slightly smoked, with its edges 
rounded. The cage, standard, and clip are blued to prevent glaring 
reflection from sunlight, and in the case of the cage to furnish a 
mirror back for the glass. 

To use the aiming device, it should be seated firmly on the gun just 
in rear of the rear sight, taking care that the standard is vertical. 
The exposed edge of the reflector glass must always be to the rear in 
order to obtain a reflection of the sights. If the instructor desires to 
stand upon the soldier’s right, the device must be placed on the gun 
so that the standard is on the left; if on the other side, the standard 
must be on the right side of the gun. In changing from one side to 
the other it is necessary to slip the cage off the standard and reverse 
it. The cage can be raised or lowered on the standard to suit the 
elevation used on the rear sight. 

AMMUNITION FOR UNITED STATES RIFLE, CALIBER .30, 

MODEL OF 1903. 

BALL CARTRIDGE, MODEL OF 1906. 

v 

The Caliber .30 Ball Cartridge, Fig. 154, consists of the case , 
; primer , charge of smokeless powder , and bullet . The case is of cartridge 
brass. It has a conical body joined to the neck by a sharper cone, 
called the shoulder. The neck is the seat of the bullet and is very 
nearly cylindrical. The front end of the case is called the mouth and 
the rear end the head. The mouth edge of the case is crimped on the 
bullet, when the cartridge is assembled, in order to keep the bullet 
secure in the case. The head of case is grooved to provide for extrac¬ 
tion of cartridge from the chamber of the rifle and is provided with 
a primer pocket and vent. The initials of the place of manufacture, 
the number of the month, and the year of its fabrication are stamped 
on the head of case. 

Fig. 154. 

u __u 


/.07 AWff. 



The primer consists of the cup , percussion composition , disk of 
shellacked paper , and anvil . The cup is of gilding metal and contains 
0.46 grain of nonfulminate composition composed of tersulphide of 
antimony, potassium chlorate, and sulphur. A disk of shellacked 
paper covers the composition to protect it from moisture and to 
































48 


prevent electrolytic action. The anvil is of brass and is assembled over 
the paper. After the primer is assembled to the case a drop of shellac 
is placed on the head of the primer to make the joint waterproof. 

The charge is of pyrocellulose composition very similar to the pow¬ 
ders used as propelling charges in field and seacoast guns. The grains 
are cylindrical, single, perforated, and graphited. The normal charge 
weighs from 47 to 50 grains, varying with the lot of powder used. 

The bullet has a core of lead and tin composition inclosed in a 
jacket of cupro nickel. It weighs 150 grains, and the point is much 
sharper and offers less resistance to the air than that of any previous 
model in the United States service. The bullet is cannelured to 
receive the crimp of the case, and the base of the bullet is flat. The 

neck of the case is shellacked before loading, 
and a pressure of at least 75 pounds is re¬ 
quired to seat the bullet in the case; this, with 
the addition of the above-mentioned crimp, 
makes the case waterproof. 

The standard muzzle velocit} r of this am¬ 
munition in the rifle is 2,700 feet per second. 
The instrumental velocity measured at 78 feet 
from the muzzle is 2,640 feet per second, with 
an allowed mean variation of 20 feet per sec¬ 
ond on either side of the standard. 

The cartridge complete weighs about 395.5 
grains, its weight varying slightly with varia¬ 
tion in the weight of the powder charge. 

Five cartridges are packed in a clip. 

The Clip, Fig. 155, consists of the body A 
and the spring B, both of brass. On the ex¬ 
terior of the sides of the body are the stop 
lugs C, which seat the clip in its slots in the 
receiver of the rifle. The top edges of the slides are folded inward, 
forming flanges, which, fitting into the grooves in the heads, hold 
the cartridges in place. The spring is secured to the bottom of the 
body by two sets of interlocking lips E. The spring is provided with 
narrow tongues D, which, when the clip is filled, are pressed into the 
grooves of theoutside cartridges, holding the cartridges securely in the 
clip. The clip body can be used a number of times, but the springs 
only once. 

The gallery practice and dummy clip is provided with a strong 
bronze spring without tongues. 

Sixty ball cartridges in 12 clips are packed in a bandoleer. 

The bandoleer is made of olive-drab cloth and contains six pockets, 
each holding two clips. The clips can be readily taken out by forc¬ 
ing back the fold of the pocket. 


Fig. 155. 







































I 


49 

The bandoleer is provided with a shoulder strap of olive-drab 
webbing by which it is carried over the shoulder, and a safety pin 
is provided to afford an adjustment of its length to suit the con¬ 
venience of the soldier. When packed the bandoleer weighs about 
3.88 pounds. 

In each bandoleer is placed an identification card showing the 
number of cartridges, the caliber and model of ammunition and rifle, 
place and date of manufacture, kind and lot of powder, and muzzle 
velocity. The shop symbols of loaders, inspectors, and packers are 
also given. In case of defective ammunition this card should be 
returned with report. 

Twelve hundred cartridges are packed in a zinc-lined packing box, 
hermetically sealed. Each box contains 20 bandoleers of 60 car¬ 
tridges each. The packing box measures 34.5 by 9.5 by 8.27 inches 
and weighs about 99 pounds. 

The lid is held to the box by five brass bolts, and can be easily 
removed without the use of tools. Two wire seals connect the cover 
with the sides of the box. 

When the lid is removed the zinc lining may be torn open by 
means of a brass handle on the tin cover. 

A new metal packing chest has been adopted. It is made of 
tinned sheet iron painted olive drab. This chest holds 1,200 car¬ 
tridges packed in 20 bandoleers of 60 cartridges each. It has a tin 
cover under the lid and is hermeticallv sealed. 

The chest measures 8 by 16J by 14 inches and weighs about 95 
pounds when filled. 

A tin seal locks the hasp to the lid. By opening and closing the 
fold of this seal several times it will break, thus permitting it to be 
easily withdrawn. When the lid is opened .the tin cover can be torn 
off by means of a brass handle attached thereto. 

BLANK CARTRIDGE, MODEL OF 1906. 

The Blank Cartridge, model of 1906, Fig. 156, differs from the 
ball cartridge in the charge of powder and in the bullet and in the 
fact that the case is tinned. The bullet is of paper, hollow, and con- 


Fig. 156. 



tarns a charge of 6 grains of “E. C.” smokeless powder, which insures 
the breaking up of the bullet on leaving the bore. This charge is 
retained in the bullet by a drop of shellac. A coating of paraffin on 

35873°—14-4 














50 


the outside of the bullet prevents the absorption of moisture by the 
paper. The propelling charge is 10 grains of “E. C.” powder. 

The cartridge is made 0.1 inch shorter than the ball cartridge. 
This is a measure of protection against the accidental assembling by 
the machine of a ball cartridge in a clip of blank ones. 

THE BLANK CARTRIDGE, MODEL OF 1909. 

In the manufacture of these blank cartridges, Fig. 157, cases are 
used which have been fired, or which have slight defects, rendering 
them unsuitable for use in ball cartridges. The charge is 12 grains 
of “E. C.” powder. 

Fig. 157. 



The case is closed by means of a paper cup inserted in the mouth 
of the case and shellacked to render the ammunition waterproof. 

DUMMY CARTRIDGE. 

The case of the Dummy Cartridge, Fig. 158, is tinned and pro¬ 
vided with six longitudinal corrugations, also three circular holes in 
the corrugated portion. 

Fig. 158. 

i /.Q93/1AX. 


/.OY/WY. 



_ _ 2.494 (MX, __ 

Z.4S4 /?//V. ' i 

„_ 3*3 4 /VAX. _ . _ m 

3*3/S rt/A4. ' “ * 

The tinning, corrugations, and holes afford unmistakable means for 
distinguishing the dummy from the ball cartridge, both by sight and 
touch. The bullet is the same as in the ball cartridge. The dummy 
primer has cup and anvil, but no percussion composition. 

GUARD CARTRIDGE. 

This cartridge, Fig. 159, differs from the ball cartridge in the charge 

Fig. 159. 

T 
I 
I 

L 


of powder and in the fact that second-class bullets having slight 
imperfections are used. Five cannelures encircle the body of the case 


































































51 


at about the middle, affording means for distinguishing it from the 
ball cartridge by either sight or touch. 

The charge, about 9.1 grains bullseye powder, or 16.7 grains Du 
Pont Itifle Smokeless No. 1, gives a muzzle velocity of 1,200 feet per 
second. This cartridge gives good results at 100 yards and has suffi¬ 
cient accuracy for use at 150 and 200 yards. The range of 100 yards 
requires a sight elevation of 450 yards, and ranges of 200 and 300 
yards require elevations of 650 and 850 yards, respectively. 

Fig. 1G0. 



The guard cartridge, Fig. 160, as now issued, differs from the old 
issue, Fig. 159, in that six longitudinal corrugations T 3 g inch long 
start from the shoulder of the case. This affords means of distin¬ 
guishing this cartridge from the ball cartridge. This cartridge has 
the same charge of powder, muzzle velocity, etc., as the old issue. 























DESCRIPTION OF COLORS AND MARKINGS. 


52 


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53 


VARIATIONS AND CORRECTIONS. 

The. components of all machine-made ammunition must of necessity 
vary within certain practicable working limits, and every such vari¬ 
ation, especially in the bullet and powder, has a corresponding effect 
upon the muzzle velocity. The service ammunition is loaded with a 
charge of powder which gives 2,700 feet per second muzzle velocity 
when fired from a standard rifle with selected bullets, the powder 
being at a temperature of 70° F. 

The service ammunition will give a muzzle velocity of 2,700 ±20 
feet per second when fired on a normal day (70° F.). This velocity 
will vary directly with the temperature (T) 1.5 feet per second per 
degree. So that this ammunition fired on any but a normal day will 
give a muzzle velocity of 2,700 ± 20 ±(T — 70) 1.5 feet per second. 
Besides the variations due to the ammunition and temperature there are 
slight variations caused by the rifle which are of no great importance. 

Small variations in velocity have small corresponding vertical devia¬ 
tions on the target. For example, at 1,000 yards an extreme verti¬ 
cal deviation of about 20 inches will be due to variations in muzzle 
velocity and 20 inches more due to other causes. The mean vertical 
deviation at tliis range, however, is less than 10 inches. 

Another factor entering the question of range is the density of the 
air. The density of the air varies with the barometer, thermometer, 
and hygrometer readings. 

The appended tables, I, II, III, and IV, wall enable a close approxima¬ 
tion to be made to the correct sight elevation for a particular condition. 

In Table I will be found the value of j for different temperatures 

and pressures of atmosphere. With ± found in Table I the corre¬ 
sponding elevation for a given range can be found in Table II, which 
is calculated for different values of With this elevation the cor¬ 
responding sight elevation can be obtained from Table IV, which 
gives the range on the sight corresponding to different angles of 
departure. 

Should the temperatures of the day vary to any great extent from 
70° F. the corresponding correction can be obtained from Table III. 
In using these tables, calculations will be sufficiently accurate if inter¬ 
polations are made by taking the proportional part of the differences 
in the tables. 

The following problem is given as an illustration of the use of these 
tables: 

Range 1,000 yards. 

Barometer reading 29 inches. 

Temperature 90° F. 


54 


From Table I, 

<N 

ic = 1.096. 

0 

$ 

From Table II, by interpolating between ^ = 1.05 and ^ = 1.10, 

js 

the elevation for -f = 1.096 is found to be 44.690 minutes. 

o 

To correct for the muzzle velocity, we have 2,700 feet per second 
+ (90-70) 1.5 = 2,730. 

From Table III, 

Interpolating between 2,700 and 2,800, the elevation is 48.198 — 
1.093 minutes. Since 48.198 minutes is the elevation for 1,000 yards 
for 2,700 feet per second muzzle velocity, it is seen that the additional 
30 feet per second decreases the elevation by 1.093 minutes. It was 
found above that the elevation for 2,700 feet per second on this day 
was 44.690 minutes, so that the elevation for the given conditions 
is 44.690 — 1.093 = 43.597 minutes, which from Table IV will be found 
to correspond to a sight elevation of 947 yards. This is subject to 
a further correction for each particular rifle. For example, if the rifle 
to which tills correction is to be applied requires a sight setting of 
1,010 yards under normal conditions, it will be necessary to add 
10 yards to the result obtained above, so that the correct setting of 
this rifle would be 957 yards under the conditions given in the 
problem. 

Table I.—VALUE OF j FOR TEMPERATURE AND PRESSURE; OF 
ATMOSPHERE TWO-THIRDS SATURATED WITH MOISTURE. 


F. 

28 in. 

'29 in. 

30 in. 

31 in. 

0 

0. 945 

0. 912 

0. 882 

0. 853 

1 

. 947 

. 914 

. 884 

. 855 

2 

. 949 

. 916 

. 886 

. 857 

3 

. 951 

. 918 

. 888 

. 859 

4 

. 953 

.920 

.890 

. 861 

5 

. 955 

. 922 

. 892 

. 863 

6 

. 957 

. 924 

.893 

. 865 

7 

. 959 

. 926 

.895 

.867 

8 

. 962 

.928 

. 897 

. 869 

9 

. 964 

. 930 

. 899 

. 870 

10 

.966 

. 932 

. 901 

. 872 

11 

. 968 

. 935 

.903 

. 874 

12 

.970 

. 937 

. 905 

. 876 

13 

.972 

. 939 

. 907 

. 878 

14 

.974 

. 941 

. 909 

. 880 

15 

.976 

.943 

. 911 

. 882 

16 

.978 

.945 

.913 

.884 

17 

.981 

. 947 

. 915 

.886 

18 

.983 

.949 

. 917 

. 888 

19 

.985 

.951 

. 919 

. 890 

20 

.987 

.953 

. 921 

. 891 

21 

.989 

. 955 

. 923 

.893 

22 

.991 

.957 

. 925 

.895 


F. 

28 in. 

29 in. 

30 in. 

31 in. 

23 

0. 993 

0. 959 

0. 927 

0. 897 

24 

. 995 

. 961 

. 929 

. 899 

25 

. 997 

,963 

. 931 

. 901 

26 

1. 000 

. 965 

. 933 

. 903 

27 

1. 002 

. 967 

.935 

.905 

28 

1. 004 

.969 

.937 

. 907 

29 

1. 006 

. 971 

. 939 

. 909 

30 

1. 008 

. 973 

. 941 

. 911 

31 

1. 010 

. 975 

. 943 

. 912 

32 

1,012 

. 977 

. 945 

. 914 

33 

1. 014 

.979 

. 947 

. 916 

34 

1. 016 

. 981 

. 949 

. 918 

35 

1. 018 

.983 

. 951 

. 920 

36 

1. 021 

.986 

. 953 

. 922 

37 

1. 023 

.988 

. 955 

. 924 

38 

1. 025 

. 990 

.957 

. 926 

39 

1. 027 

.992 

. 958 

. 928 

40 

1.029 

.994 

.960 

.930 

41 

1. 031 

.996 

.962 

. 932 

42 

1. 033 

.998 

. .964 

.933 

43 

1. 035 

1. 000 

.966 

.935 

44 

1. 037 

1. 002 

. 968 

. 937 

45 

1. 040 

1. 004 

970 

.939 

























55 




Table I.—VALUE OF j FOR TEMPERATURE AND PRESSURE; OP 
ATMOSPHERE TWO-THIRDS SATURATED WITH MOISTURE—Contd. 


F. 

28 in. 

29 in. 

30 in. 

31 in. 

F. 

28 in. 

29 in. 

30 in. 

31 in. 

46 

1. 042 

1 . 006 

0. 972 

0. 941 

74 

1. 101 

1. 063 

1. 027 

0. 995 

47 

1. 044 

1.008 

.974 

. 943 

75 

1. 103 

1. 065 

1. 029 

. 996 

48 

1. 046 

1 . 010 

. 976 

. 945 

76 

1. 105 

1. 067 

1. 031 

. 998 

49 

1. 048 

1 . 012 

. 978 

.947 

77 

1. 107 

1. 069 

1. 033 

1. 000 

50 

1. 050 

1. 014 

. 980 

. 949 

78 

1. 109 

1. 071 

1. 035 

1. 002 

51 

1. 052 

1 . 016 

.982 

. 951 

79 

1 . Ill 

1. 073 

1. 037 

1. 004 

52 

1. 054 

1. 018 

. 984 

.953 

80 

1. 113 

1. 075 

1. 039 

1. 006 

53 

1. 056 

1 . 020 

. 986 

. 954 

81 

1 . 116 

1. 077 

1. 041 

1. 008 

54 

1. 058 

1 . 022 

. 988 

. 956 

82 

1 . 118 

1. 079 

1. 043 

1 . 010 

55 

1 . 061 

1. 024 

. 990 

. 958 

83 

1 . 120 

1 . 081 

1. 045 

1 . 012 

56 

1. 063 

1. 026 

. 992 

. 960 

84 

1 . 122 

1. 083 

1. 047 

1. 014 

57 

1. 065 

1. 028 

. 994 

.962 

85 

1. 124 

1. 085 

1. 049 

1 . 016 

58 

1. 067 

1. 030 

.996 

. 964 

86 

1 . 126 

1 . 088 

1. 051 

1. 017 

59 

1. 069 

1. 032 

. 998 

. 966 

87 

1 . 128 

1. 090 

1. 053 

1. 019 

60 

1. 071 

1. 034 

1 . 000 

. 968 

88 

1. 130 

1. 092 

1. 055 

1 . 021 

61 

1. 073 

1. 037 

1 . 002 

. 970 

89 

1. 132 

1. 094 

1. 057 

1. 023 

62 

1. 075 

1. 039 

1. 004 

. 972 

90 

1. 135 

1. 096 

1. 059 

1. 025 

63 

1» 078 

1. 041 

1 . 006 

. 974 

91 

1. 137 

1. 098 

1 . 061 

1. 027 

64 

1. 080 

1. 043 

1. 008 

, 975 

92 

1. 139 

1 . 100 

1. 063 

1. 029 

65 

1. 082 

1. 045 

1 . 010 

. 977 

93 

1. 141 

1 . 102 

1. 065 

1. 031 

66 

1. 084 

1. 047 

1 . 012 

.979 

94 

1. 143 

1. 104 

1. 067 

1. 033 

67 

1. 086 

1. 049 

1. 014 

. 981 

95 

1. 145 

1 . 106 

1. 069 

1. 035 

68 

1. 088 

1. 051 

1 . 016 

. 983 

96 

1. 147 

1. 108 

1. 071 

1. 037 

69 

1. 090 

1. 053 

1. 018 

.985 

97 

1. 149 

1 . 110 

1. 073 

1. 038 

70 

1. 092 

1. 055 

1 . 020 

.987 

98 

1. 151 

1 . 112 

1. 075 

1. 040 

71 

1. 094 

1. 057 

1 . 022 

.989 

99 

1. 154 

1. 114 

1. 077 

1. 042 

72 

73 

1. 097 

1. 099 

1. 059 

1 . 061 

1. 024 

1. 025 

.991 
. 993 

100 

1. 156 

1. 116 

1. 079 

1. 044 


Table II. 


[Muzzle velocity, 2,700 feet per second.] 


Range. 

Angle of Departures when y 


= 0.85. 

= 0.90. 

= 0.95. 

=1. 

= 1.05. 

= 1.10. 

= 1.15. 

Yards. 

Deg. Min. 

Deg. Min. 

Deg. Min. 

Deg. Min. 

Deg. Min. 

Deg. Min. 

Deg. Min. 

100 

0 2. 447 

0 2. 439 

0 2. 4315 

0 2. 424 

0 2. 416 

0 2. 410 

0 2.403 

200 

0 5.277 

0 5. 229 

0 5. 173 

0 5. 152 

0 5. 121 

0 5.090 

0 5.064 

300 

0 8. 585 

0 8. 466 

0 8. 365 

0 8.275 

0 8. 192 

0 8.118 

0 8.051 

400 

0 12. 458 

0 12. 216 

0 12. 012 

0 11. 831 

0 11. 673 

0 11. 530 

0 11. 483 

500 

0 17. 048 

0 16. 612 

0 16. 240 

0 15. 918 

0 15. 638 

0 15. 380 

0 15.163 

600 

0 22. 483 

0 21. 766 

0 21. 170 

0 20. 650 

0 20. 186 

0 19. 775 

0 19. 420 

700 

0 28. 965 

0 27. 854 

0 26. 913 

0 26. 104 

0 25. 400 

0 24. 795 

0 24. 259 

800 

0 36. 645 

0 35. 026 

0 33. 637 

0 32. 441 

0 31. 413 

0 30. 51 

0 29. 735 

900 

0 45. 617 

0 43. 378 

0 41. 447 

0 39. 785 

0 38. 334 

0 37. 069 

0 35. 961 

1, 000 

0 55. 904 

0 52. 970 

0 50. 422 

0 48. 198 

0 46. 256 

0 44. 554 

0 43. 054 

1,100 

1 7.488 

1 3. 798 

1 1.838 

0 57. 728 

0 55. 228 

0 53. 020 

0 51. 066 

1,200 

1 20. 369 

1 15. 856 

1 11. 881 

1 8.379 

1 5.265 

1 2.497 

1 0. 040 

1,300 

1 34. 554 

1 29. 077 

1 24. 358 

1 20. 131 

1 16. 364 

1 13. 001 

1 9.988 

1, 400 

1 50. 051 

1 43. 658 

1 38. 003 

1 32. 987 

1 28. 508 

1 24. 491 

1 20. 899 

1,500 

2 6. 938 

1 59. 433 

1 52. 815 

1 46. 951 

1 41. 937 

1 36. 997 

1 32. 760 

1,600 

2 25. 183 

2 16. 498 

2 8. 828 

2 2. 038 

1 55. 971 

1 50. 504 

1 45. 598 

1, 700 

2 44. 893 

2 34. 883 

2 26. 077 

2 18.272 

2 11. 300 

2 5.035 

1 59. 405 

1,800 

3 6. 100 

2 54. 625 

2 44. 575 

2 35. 674 

2 27. 708 

2 20. 591 

2 14. 187 

1,900 

3 28. 92 

3 15. 754 

3 4.362 

2 54. 277 

2 45. 274 

2 37. 207 

2 29. 951 

2, 000 

3 53. 408 

3 38. 504 

3 25. 540 

3 14. Ill 

3 3.985 

2 54. 904 

2 46. 738 





























































56 


Table III. 


Angle of Departure when 

II 

Co 1*5 

1. 

Angle of Departure when ' ; 1= 1. 

5 


M. 

V.= 2,600 

M. 

V.= 2,700 

M. 

V.= 2,800 


M. 

V.= 2,600 

M. 

V.= 2,700 

M. V.= 

Range. 


f. s. 


f. s. 


f. s. 

Range. 


f. s. 


f. s. 

2, 

800 f. s. 



4>= 


<f>= 


0= 



0= 


</>= 


0= 

Yards. 

Deg. Min. 

Deg. Min. 

Deg. Min. 

Yards. 

Deg. Min. 

Deg. Min. 

Deg. Min. 

100. 

0 

2. 612 

0 

2. 424 

0 

2. 251 

1,100.... 

] 

2. 394 

0 

57. 728 

0 

53. 447 

200. 

0 

5. 573 

0 

5. 152 

0 

4. 790 

1,200.... 

1 

13. 696 

1 

8. 379 

1 

3. 427 

300. 

0 

8.941 

0 

8. 275 

0 

7. 668 

1,300.... 

1 

26. 106 

1 

20. 131 

1 

14. 575 

400. 

0 

12. 806 

0 

11. 831 

0 

10. 959 

1,400.... 

1 

39. 633 

1 

32. 987 

1 

26. 783 

500. 

0 

17. 248 

0 

15. 918 

0 

14. 736 

1,500.... 

1 

54. 266 

1 

46. 951 

1 

40. 108 

600. 

0 

22. 378 

0 

20. 650 

0 

19. 091 

1,600.... 

2 

10. 050 

2 

2. 038 

1 

56. 386 

700. 

0 

28. 315 

0 

26. 104 

0 

24. 120 

1,700.... 

2 

26. 985 

2 

18. 272 

2 

10. 070 

800. 

0 

35. 205 

0 

32. 441 

0 

29. 956 

1,800.... 

2 

45. 099 

2 

35. 674 

2 

26. 790 

900. 

0 

43.152 

0 

39. 785 

0 

36. 734 

1,900.... 

3 

4. 429 

2 

54. 277 

2 

44. 689 

1,000.... 

0 

52. 206 

0 

48. 198 

0 

44. 552 

2,000.... 

3 

25. 03 

3 

14. Ill 

3 

3. 793 


Table IV.—ANGLE OF DEPARTURE FOR EVERY 25 YARDS FROM 100 TO 

2,000 WHEN 



[Showing the relation between the range marked on sight and angle of departure as computed.] 


Range. 

Angle of 
departure. 

Range. 

Angle of 
departure. 

Range. 

Angie of 
departure. 

* 

Range. 

Angle of 
departure. 

Yards. 

Deg. Min. 

Yards. 


Deg 

Min. 

Yards. 

Deg 

Min. 

Yards. 

Deg. 

Min. 

100.... 

0 

2. 424 

650... 


0 

23. 273 

1,200.. 

1 

8. 379 

1,750.. 

2 

26. 824 

125.... 

0 

3. 073 

675... 


0 

24. 660 

1,225.. 

1 

11. 150 

1,775.. 

2 

31. 211 

150.... 

0 

3. 744 

700... 


0 

26. 104 

1,250.. 

1 

14. 112 

1,800.. 

2 

35. 674 

175.... 

0 

4. 434 

725... 


0 

27. 602 

1,275.. 

1 

17. 080 

1,825.. 

2 

40. 211 

200.... 

0 

5. 152 

750... 


0 

29.158 

1,300.. 

1 

20.131 

1,850.. 

2 

44. 823 

225.... 

0 

5. 894 

775... 


0 

30. 767 

1,325.. 

1 

23. 238 

1,875.. 

2 

49. 511 

250.... 

0 

6. 664 

800... 


0 

32. 441 

1,350.. 

1 

26. 421 

1,900.. 

2 

54. 277 

275.... 

0 

7. 454 

825... 


0 

34.181 

1,375.. 

1 

29. 665 

1,925.. 

2 

59. Ill 

300.... 

0 

8. 275 

850... 


0 

35. 984 

1,400.. 

1 

32. 987 

1,950.. 

3 

4. 032 

325.... 

0 

9.119 

875... 


0 

37. 851 

1,425.. 

1 

36. 368 

1,975.. 

3 

9. 028 

350.... 

0 

9. 996 

900... 


0 

39. 785 

1,450.. 

1 

39. 828 

2,000.. 

3 

14. Ill 

375.... 

0 

10. 897 

925... 


0 

41. 786 

1,475.. 

1 

43. 355 




400.... 

0 

11.831 

950... 


0 

43. 852 

1,500.. 

1 

46. 951 




425.... 

0 

12. 800 

975... 


0 

45. 991 

1,525.. 

1 

50. 618 




450.... 

0 

13. 800 

1,000.. 


0 

48.198 

1,550.. 

1 

54. 354 




475.... 

0 

14. 844 

1,025.. 


0 

50. 482 

1,575.. 

1 

58.158 




500.... 

0 

15. 918 

1,050.. 


0 

52. 826 

1,600.. 

2 

2. 038 




525.... 

0 

17. 036 

1,075.. 


0 

55. 241 

1,625.. 

2 

5. 982 




550.... 

0 

18.194 

1,100.. 


0 

57. 728 

1,650.. 

9 

10. 003 




575.... 

0 

19. 402 

1,125.. 


1 

0. 290 

1,675.. 

2 

14. 098 




600.... 

0 

20. 650 

1,150.. 


1 

2.916 

1,700.. 

2 

18. 272 




625.... 

0 

21. 943 

1,175.. 


1 

5. 615 

1,725.. 

2 

22. 512 






























































57 


EXTERIOR BALLISTICS. 

RAPIDITY OF FIRE. 

Twenty-three aimed shots have been fired in one minute with this 
rifle, used as a single-loader, and 25 shots in the same time, using 
magazine fire. 

Firing from the hip without aim, 30 shots have been fired in one 
minute, using rifle as a single-loader, and 40 shots in one minute, 
using magazine fire. 

MAXIMUM RANGE. 

[Computed.] 


Maximum range. 

Elevation. 

Time of flight. 

4,891.6 yards. 

45 degrees. 

38.058 seconds. 


PRESSURE. 


The powder pressure in the chamber of this rifle is about 51,000 
pounds per square inch. 


RECOIL. 


[Computed.] 


The maximum energy of free recoil of this rifle is 14.98 foot¬ 


pounds. 


ACCURACY. 


[As determined by firings to date.] 


Deviation. 


Range, yards. 


100 . . 
200 . . 
300. . 
400. . 
500. . 
600. . 
700. . 
800. . 
900. . 
1,000 


Mean vertical. 

Mean horizontal. 

Mean radius. 

Inches. 

Inches. 

Inches. 

0.6 

0.6 

0.8 

1.1 

1. 1 

1.5 

1. 7 

1.7 

2.3 

2.3 

2.3 

3.2 

3.0 

3.0 

4.1 

3.6 

3. 6 

5.0 

4.3 

4.3 

6.0 

5.0 

5.0 

7.1 

5.9 

5.8 

8.3 

6.5 

6.4 

9.6 


































58 


PENETRATION. 


Material. 

Penetration. 

50 feet. 

100 yards. 

500 yards. 

1,000 yards. 

White-pine butts made of 1-inch boards 

placed 1 inch apart. 

Moist sand. 

Inches. 

59. 98 
10. 06 

6. 32 

19. 9 

34. 19 

Inches. 

52. 8 

14. 02 

6. 88 
17. 46 
31. 18 

5. 5 
. 40 

Inches. 

26. 36 

16. 1 

13. 12 

23. 62 

14. 328 

Inches. 

10. 48 
13. 9 
10. 86 
17. 46 

Dry sand... 

Loam practically free from sand. 

Thoroughly seasoned oak across the grain. 
Brick wall . . 

Low steel (boiler plate). 

.528 

.01 

.0 


POINT BLANK DANGER SPACE. 

[Battle sight, angle of departure, (<£)= 0° 18' 3.97".] 


Firing position. 

Assumed height 
of line of sight 
above ground. 

Point blank 
danger space 
(computed). 

Standing. 

Kneeling. 

Lying down. 

Inches. 

56 

30 

12 

Yards. 

203. 0 
636. 6 
587. 2 

J o " 

• 


[Barrel horizontal.] 


Standing. . 

56 

421. 7 

Kneeling. 

30 

324. 3 

Prone. 

12 

210. 1 



I 
















































TABLE OF FIRE FOR UNITED STATES RIFLE, CALIBER .30, MODEL OF 1903, MODEL OF 1905 SIGHT, AND 1906 AMMUNITION. 

[Initial velocity=2,700 feet per second. C=0.3894075, determined experimentally at Frankford Arsenal.] 


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64 


HORIZONTAL DEVIATION. 

The rifle has a right-hand twist, and the drift proper is therefore 
to the right. There is, however, a slight lateral jump to the left, and 
the total horizontal deviation of the bullet, excluding wind, is the 
algebraic sum of the drift and the lateral jump. The trajectory is 
found to be very slightly to the left of the central or uncorrected line 
of sight up to a range of 500 yards, and beyond that range to the 
right of this line. In order to minimize the deviations at the most 
important ranges, the drift slot on the sight leaf is so cut as to make 
the trajectory cross the adjusted line of sight at a range of 500 yards. 
The deviations under these conditions are shown in column (4) of the 
table below. 

This drift and the deviations due to wind, given below, have been 
determined by experimental firings, up to 2,000 yards. 


Drift with targeted rifles, model of 1905 sights 
graduated for 1906 ammunition. 


Range (yards). 

(1) 

Total drift. 

(2) 

Drift corrected 
by sight leaf. 

(3) 

Drift uncor¬ 
rected (right). 
(4) 

Left. 

Right. 

Left. 

Right. 


Inches. 

Inches. 

Inches. 

Inches. 

Inches. 

100. 

0. 26 


0. 26 


0. 0 

200. 

0. 42 


0. 42 


0. 0 

300. 

0. 45 


0. 45 


0. 0 

400. 

0. 32 


0. 32 


0. 0 

500. 

0.0 


0. 0 


0. 0 

600. 


0. 55 


0 55 

0 0 

700. 


2. 0 


1. 4 

0 6 

800. 


4. 5 


2. 6 

1 9 

900. 


8. 2 


4. 2 

4 0 

1,000. 


13. 0 


6. 3 

6. 7 

l'lOO. 


20. 5 


9. 0 

11 5 

1^200. 


29. 3 


12. 3 

17 0 

l'300. 


40. 0 


16 3 

23 7 

l'400. 


50. 7 


21. 1 

29 6 

l'500. 


61. 75 


26. 75 

35 0 

P600. 


74. 8 


33. 3 

41 5 

l'700. 


90. 0 


40 8 

49 2 

l'SOO. 


107. 0 


49 3 

57 7 

P900. 


126. 5 


59.1 

67 4 

2 b00. 


148. 5 


69 9 

78 6 

2J00. 


174. 5 


82 1 

92 4 

2'200. 


202. 0 


95 6 

106 4 

2*300. 


232. 0 


110 4 

121 6 

2^400. 


264. 0 


126 7 

137 3 

2 b00. 


301. 0 


145 3 

155 7 

2 boo. 


339. 0 


165 4 

173 6 

2,700. 


381. 0 


188 1 

192 9 

2b00. 


428. 0 


212 8 

215 2 

2,850. 


456. 0 


226.3 

229. 7 






Deviation at target 
produced by a 1- 
mile wind normal 
to the plane of fire. 

(5) 


Inches. 

0.1 
0. 3 
0.8 

1.5 
2.4 

3.6 

5.1 
6.9 

9.1 

11.5 

14.3 
17. 2 

20.4 

23.8 

27.4 

31.2 

35.2 

39.4 
43. 9 

48.6 

53.5 
58. 6 

63.8 

69.1 
74. 6 
80.0 

84.5 

90.3 

93.2 




















































































65 


CORRECTIONS CORRESPONDING TO ONE POINT OF THE DEFLECTION 
SCALE AND TO A CHANGE IN ELEVATION OF 25 YARDS. 


Range 

(yards). 

Correction 
caused by mov¬ 
ing the eyepiece 
one point. 

100. 

4. 311 

200. 

8. 622 

300. 

12. 933 

400. 

17. 244 

500. 

21. 555 

600. 

25. 866 

700. 

30.177 

800. 

34. 488 

900. 

38. 799 

1, 000. 

43.110 

l' 100. 

47. 421 

l' 200. 

51.'732 

1, 300. 

56. 043 

1, 400. 

60. 354 


Correction corre¬ 
sponding to a 
change in eleva¬ 
tion of 25 yards. 

Range 

(yards). 

0. 72405 

1, 500. 

1. 6189 

1, 600. 

2. 7701 

1,700. 

4. 328 

1,800. 

6.182 

1,900. 

8.542 

2,000. 

11. 674 

2, 100. 

15. 620 

2,200. 

19. 769 

2,300. 

24. 813 

2,400. 

30. 874 

2,500. 

37. 097 

2, 600. 

43. 890 

2,700. 

51. 822 

2, 800. 


Correction 
caused by mov¬ 
ing the eyepiece 
one point. 

Correction corre¬ 
sponding to a 
change in eleva¬ 
tion of 25 yards. 

64. 665 

59. 185 

68. 976 

68. 337 

73. 287 

77. 795 

77. 598 

88. 228 

81. 909 

98. 927 

86. 220 

111. 45 

90. 531 

123. 86 

94. 842 

136. 91 

99.153 

150. 62 

103. 464 

165. 96 

107. 775 

186. 09 

112. 086 

' 207. 29 

116.397 

230. 64 

120. 708 

271. 07 


TABLE SHOWING NUMBER OF POINTS OF DEFLECTION OR WINDAGE 
NECESSARY TO CORRECT FOR A 10-MILE-AN-HOUR WIND, DRIFT 
NOT CONSIDERED. 

[Computed.] 


Range 

(yards). 

Direction of wind. 

Range 

(yards). 

Direction of wind. 

Ill, IX. 

II, IV, 
VIII, X. 

l,v, 

VII, XI. 

Ill, IX. 

II, iv, 
VIII, X. 

IV. 
VII, XI. 

100 

0. 23 

0.2 

0.1 

1,600 

4. 52 

3. 92 

2. 26 

200 

.34 

.31 

. 17 

1, 700 

4. 80 

4. 15 

2. 40 

300 

.61 

.53 

.30 

1,800 

5.01 

4. 34 

2. 50 

400 

.86 

.75 

.43 

1,900 

5. 36 

4. 64 

2. 68 

500 

1. 11 

.96 

.55 

2, 000 

5. 63 

4. 87 

2. 81 

600 

1. 39 

1.2 

.69 

2,100 

5. 91 

5.11 

2. 95 

700 

1. 68 

1.45 

.84 

2, 200 

6.17 

5. 35 

3. 09 

800 

2. 00 

1. 73 

1.00 

2, 300 

6. 44 

5. 57 

3. 22 

900 

2. 34 

2. 03 

1.17 

2,400 

6. 67 

5. 77 

3. 33 

1,000 

2. 67 

2. 30 

1. 33 

2, 500 

6. 92 

5. 99 

3. 46 

1,100 

3. 01 

2.61 

1.50 

2, 600 

7.14 

6.18 

3. 57 

1,200 

3. 32 

2. 88 

1. 66 

2, 700 

7. 26 

6. 29 

3. 63 

1,300 

3. 64 

3.15 

1.82 

2, 800 

7. 48 

6. 48 

3. 74 

1,400 

3. 94 

3. 41 

1. 97 

2,850 

7. 58 

6. 56 

3. 79 

1,500 

4. 24 

3. 66 

2.12 






35873°—14-5 








































































LONGITUDINAL WIND COMPONENTS FOR MODEL OF 1903 RIFLE, 1905 SIGHT, 1906 AMMUNITION (CALCULATED). 

[+JX=» yards short at target on horizontal plane; — jX= yards over at target on horizontal plane; +jY= distance above at target in vertical plane; — jY= distance below at target 

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68 


PRINCIPAL DIMENSIONS AND WEIGHTS OF UNITED 
STATES RIFLE, CAL. .30, MODEL OF 1903. 

DIMENSIONS. 

Barrel: Inches. 

Diameter of bore.*. 0.30 

Exterior diameter at muzzle.619 

Exterior diameter at breech. 1.14 

Length of chamber and bore. 23. 79 

Length of travel of bullet in bore. 21. 697 

Diameter of chamber, rear end.4716 

Diameter of chamber, front end.442 

Diameter of neck of chamber, rear end. 3425 

Diameter of neck of chamber, front end. 3405 

Length of body of chamber. 1. 793 

Length of shoulder of chamber.16 

Length of neck of chamber.396 

Length of chamber, total. 2. 3716 

Rifling: 

Number of grooves, 4. 

Twist, uniform, one turn in. 10. 00 

Width of grooves.1767 

Width of lands.0589 

Depth of grooves.004 

Height of front sight above axis of bore. 1. 05 

Distance from top of front sight to rear side of leaf, leaf raised. 22. 1254 

Stock: 

Length, with butt plate._ . 40. 166 

Crook, i. e., distance from axis of bore to heel of butt. 2. 089 

Distance from trigger to butt plate. 12. 74 

Length of gun complete. 43. 212 

Sight radius. 22. 1254 

Sight radius (battle sight). 21. 5404 

Width of single division on windage scale. 0267 

WEIGHTS. 

Pounds. 

Barrel. 2. 79 

Barrel, with rear-sight base and front-sight stud. 3. 00 

Butt plate.26 

Receiver.98 

Bolt mechanism. 1. 00 

Magazine and trigger guard.44 

Magazine mechanism, including floor plate.17 

Bayonet.*. 1. 00 

Stock. 1. 58 

Hand guard.13 

Front and rear bands, including swivels.25 

Rear sight, not including base.20 

Total weight of metal parts. 7. 30 

Oiler and thong case.19 

Total weight of arm, including oiler and thong case, with bayonet. 9. 69 

Total weight of arm, including oiler and thong case, without bayonet. 8. 69 

Weight to compress mainspring. 16 to 18 

Trigger pull (measured at middle point of bow of trigger). 3 to 4£ 














































69 


Initial velocity. 

Powder pressure in chamber 
Weight of ball cartridge .... 

Weight of bullet. 

Weight of powder charge 


MISCELLANEOUS DATA. 

. 2,700 feet per second. 

..about 51,000 pounds per square inch. 

.about 395.5 grains. 

. 150 grains. 

. about 50 grains. 


War Department, 

Office of the Chief of Ordnance, 

Washington, March 20, 1914 • 

March 3, 1904. 

Revised April 18, 1906. 

Revised February 14, 1908. 

Revised April 2, 1909. 

Revised October 17, 1911. 

Revised March 20, 1914. 

Form No. 1923. 

Ed. Mar. 20-14—5,000. 

S8025-16S7. 

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' 

INDEX. 


__ 

Accessories: Page. 

Description. 26-27 

List.*” ~6 

Repair, spare parts for. 42 

Aiming device.46-47 

Ammunition: 

Cartridges— 

Ball, model of 1906. 47-49 

Blank, model of— 

1906. 49-50 

1909. 50 

Dummy. 50 

Guard. 50-51 

Packing, description of colors and markings. 48, 49, 52 

Variations and corrections. 53-56 

Appendages: 

Description *. 25-26 

List. 6 

Repair, spare parts for... 41 

Arm chest. 39-40 

Arm locker. 40 

Arm repair chest, model of 1910. 42-43 

Bandoleer. 48-49 

Bayonet, model of 1905: 

Component parts. 6 

Description. 21-23 

Repair, spare parts for. 42 

Bayonet scabbard, model of: 

1905.-. 23, 24 

1910. 23,24,25 

Clip. 48 

Dimensions, principal, of rifle. 68 

Exterior ballistics: 

Accuracy. 57 

Corrections corresponding to one point of the deflection scale and to a 

change in elevation of 25 yards (table). 65 

Dangerous spaces. 63 

Drift (table). 64 

Horizontal deviation. 64 

Longitudinal wind components. 66-67 

Maximum range. 57 

Ordinates of trajectory above line of sight. 60-62 

Penetration. 58 

Point blank danger space. 58 

Table of fire. 59 

Windage necessary to correct for a 10-mile-an-hour wind, drift not con¬ 
sidered (table). 65 

Miscellaneous data. 69 

Rifle: 

Assembled parts and their operations. 27-32 

Assembling after dismounting. 37 

Bolt mechanism— 

Assembling. 34-35 

Dismounting. 33-34 

Operation. 27-31 

Care. 37-38 

Component parts. 5-6 


( 71 ) 
















































72 


Rifle—Continued. 

Description. 

Dismounting and assembling by soldier. 

Dismounting, completion. 

Injuries which do not render parts unserviceable. 

Magazine mechanism— 

Dismounting.„. 

Operation. 

Metallic fouling.„.... 

Nomenclature.„. 

Packing. 

Precautions.... 

Pressure. 

Rapidity of fire. 

Recoil. 

Remarks... 

Repair- 

Parts most liable to require. 

Spare parts for... 

Replacing broken parts.. 

Using, when certain parts 6i bolt and magazine mechanism are wanting.. 

Weights, principal, of rifle..... ... . 


Page. 

7-21 

32-35 

36-37 

44 

35 

31-32 

38- 39i 
7-21/ 

39- 40 
32 
57 
57 
57 

45 

44 

40- 41 

44 

45 
68 


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LIBRARY OF CONGRESS 


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